ClassID:

90872

C07C15/28 - CPC Classification

Classification description:

Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts; Polycyclic condensed hydrocarbons containing three rings Anthracenes

Recent Application in this class:
#1
20260107631
2026-04-16

LIGHT-RECEIVING DEVICE AND LIGHT-EMITTING AND LIGHT-RECEIVING APPARATUS

#2
20260049090
2026-02-19

ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME

#3
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2025-09-11

ORGANIC ELECTROLUMINESCENT COMPOUND, A PLURALITY OF HOST MATERIALS AND ORGANIC ELECTROLUMINESCENT COMPRISING THE SAME

#4
20250257261
2025-08-14

PLURALITY OF LIGHT-EMITTING MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME

#5
20250194413
2025-06-12

DEUTERATED COMPOSITION, ORGANIC LIGHT-EMITTING DEVICE AND DISPLAY DEVICE

#6
20250178987
2025-06-05

ORGANIC COMPOUND, ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE HAVING THEREOF

#7
20250127037
2025-04-17

NOVEL ORGANIC ANTHRACENE COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME

#8
20250011260
2025-01-09

Anthracene Compound For Host Material, Light-Emitting Device, Light-Emitting Apparatus, Electronic Apparatus, and Lighting Apparatus

#9
20240409482
2024-12-12

Novel Compound and Organic Light Emitting Device Comprising the Same

#10
20240300912
2024-09-12

COMPOUND HAVING NAPHTHOBENEZOFURANYL STURCTURE, MATERIAL FOR ORGANIC ELECTROLUMINESCENCE DEVICE, ORGANIC ELECTROLUMINESCENT DEVICE, AND ELECTRONIC INSTRUMENT

#11
20240270666
2024-08-15

SYMMETRIC TETRAALKYNYLATED ANTHRACENES AND THE PROCESS FOR PREPARING THE SAME FOR SENSING AND OPTOELECTRONIC APPLICATIONS

#12
20240122063
2024-04-11

COMPOSITION, POWDER, ORGANIC ELECTROLUMINESCENT ELEMENT, METHOD FOR MANUFACTURING ORGANIC ELECTROLUMINESCENT ELEMENT, AND ELECTRONIC DEVICE

#13
20240083865
2024-03-14

METHOD FOR PREPARATION OF DEUTERATED ANTHRACENE COMPOUND, REACTION COMPOSITION, DEUTERATED ANTHRACENE COMPOUND, AND COMPOSITION

#14
20240043413
2024-02-08

COMPOUNDS AND APPLICATIONS THEREOF IN FIELD OF OPTOELECTRONICS

#15
20240002312
2024-01-04

METHOD FOR PREPARING DEUTERATED ANTHRACENE COMPOUND, REACTION COMPOSITION, DEUTERATED ANTHRACENE COMPOUND AND COMPOSITION

#16
20230312501
2023-10-05

Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device

#17
20230286882
2023-09-14

METHOD FOR PREPARING DEUTERATED AROMATIC COMPOUND AND DEUTERATED REACTION COMPOSITION

#18
20230271901
2023-08-31

METHOD FOR PREPARING DEUTERATED AROMATIC COMPOUND AND DEUTERATED REACTION COMPOSITION

#19
20230217810
2023-07-06

Composition, and Electronic Device and Organic Light-Emitting Device Comprising Same

#20
20230180596
2023-06-08

Novel Compound and Organic Light Emitting Device Comprising the Same

#21
20230159413
2023-05-25

Composition, organic light-emitting device, display device, photoelectric conversion apparatus, electronic apparatus, and moving object including the composition

#22
20230147748
2023-05-11

LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME

#23
20230141364
2023-05-11

Composition, and Electronic Device and Organic Light-Emitting Device Comprising Same

#24
20230139906
2023-05-04

ORGANOMETALLIC COMPOUND AND LIGHT-EMITTING DEVICE INCLUDING THE SAME

#25
20230119911
2023-04-20

ORGANIC LIGHT-EMITTING DEVICE

#26
20230114182
2023-04-13

ORGANIC LIGHT EMITTING DEVICE

#27
20230106429
2023-04-06

COMPOUND, MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE

#28
20230096132
2023-03-30

CYCLOALKANE-FUSED POLYCYCLIC AROMATIC COMPOUND

#29
20230093163
2023-03-23

ORGANIC COMPOUND, LIGHT-EMITTING DEVICE, DISPLAY APPARATUS, ELECTRONIC DEVICE, LIGHT-EMITTING APPARATUS, AND LIGHTING DEVICE

#30
20230092585
2023-03-23

ORGANIC LIGHT-EMITTING DEVICE

#31
20230092059
2023-03-23

ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

#32
20230088213
2023-03-23

ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE

#33
20230084250
2023-03-16

ORGANIC LIGHT EMITTING DEVICE

#34
20230083303
2023-03-16

POLYCYCLIC COMPOUND AND AN ORGANIC ELECTROLUMINESCENCE DEVICE COMPRISING THE POLYCYCLIC COMPOUND OR THE COMPOSITION

#35
20230062265
2023-03-02

LIGHT-RECEIVING DEVICE AND LIGHT-EMITTING AND LIGHT-RECEIVING APPARATUS

#36
20230051376
2023-02-16

MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES

#37
20230041530
2023-02-09

ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

#38
20230026288
2023-01-26

Compound having naphthobenzofuranyl structure, material for organic electroluminescence device, organic electroluminescence device, and electronic instrument

#39
20230002420
2023-01-05

ORGANIC LIGHT-EMITTING ELEMENT

#40
20230002417
2023-01-05

ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

#41
20220407026
2022-12-22

ORGANIC ELECTROLUMINESCENT DEVICE

#42
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2022-12-15

ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

#43
20220389027
2022-12-08

Compound and organic light-emitting device comprising same

#44
20220388960
2022-12-08

ORGANIC MOLECULES FOR USE IN LIGHT-EMITTING DEVICES

#45
20220380278
2022-12-01

ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE

#46
20220371974
2022-11-24

ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE

#47
20220367830
2022-11-17

LIGHT-EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME

#48
20220356133
2022-11-10

ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE

#49
20220348523
2022-11-03

ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE

#50
20220348522
2022-11-03

ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE

#51
20220340602
2022-10-27

HETEROCYLIC COMPOUND AND LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE HETEROCYCLIC COMPOUND

#52
20220332734
2022-10-20

ORGANIC MOLECULES FOR OPTOELECTRONIC DEVICES

#53
20220320455
2022-10-06

Organic light emitting device and display apparatus

#54
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2022-10-06

LIGHT-EMITTING DEVICE INCLUDING ORGANOMETALLIC COMPOUND, ELECTRONIC APPARATUS INCLUDING THE LIGHT-EMITTING DEVICE, AND THE ORGANOMETALLIC COMPOUND

#55
20220289769
2022-09-15

ORGANIC MOLECULES FOR OPTOELECTRONIC DEVICES

#56
20220281856
2022-09-08

COMPOUND, MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT ELEMENT, AND ELECTRONIC DEVICE

#57
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2022-09-01

ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME

#58
20220255018
2022-08-11

ORGANIC ELECTROLUMINESCENCE DEVICE AND ELECTRONIC APPARATUS USING THE SAME

#59
20220223793
2022-07-14

ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME

#60
20220216410
2022-07-07

ORGANIC LIGHT EMITTING DEVICE

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20220216409
2022-07-07

Organic Light Emitting Device

#62
20220216408
2022-07-07

Organic Light Emitting Device

#63
20220216407
2022-07-07

Organic Light Emitting Device

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20220209131
2022-06-30

ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME

#65
20220209120
2022-06-30

ORGANIC LIGHT EMITTING DEVICE

#66
20220190248
2022-06-16

Light emitting device and production method thereof, and composition for light emitting device and production method thereof

#67
20220177392
2022-06-09

Method for separating 2-alkylanthracenes and use thereof for producing hydrogen peroxide

#68
20220131115
2022-04-28

Method for Preparing an Organic Semiconducting Layer, a Composition for Use Therein and an Organic Electronic Device

#69
20220102642
2022-03-31

LIGHT EMITTING DEVICE COMPOSITION AND LIGHT EMITTING DEVICE CONTAINING THE SAME

#70
20220102641
2022-03-31

FUNCTIONAL MATERIALS FOR OLED APPLICATIONS

#71
20220093868
2022-03-24

ORGANIC LIGHT EMITTING DIODE

#72
20220020929
2022-01-20

ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE HAVING THEREOF

#73
20210384430
2021-12-09

ORGANIC ELECTROLUMINESCENCE DEVICE AND ELECTRONIC APPARATUS PROVIDED WITH THE SAME

#74
20210331991
2021-10-28

ELECTROLUMINESCENT MATERIAL

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20210320256
2021-10-14

ORGANIC LIGHT-EMITTING DEVICE AND APPARATUS INCLUDING THE SAME

#76
20210309603
2021-10-07

Composition for light emitting device and light emitting device containing the same

#77
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2021-09-23

ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME

#78
20210284590
2021-09-16

Anthracene Compound for Host Material, Light-Emitting Device, Light-Emitting Apparatus, Electronic Apparatus, and Lighting Apparatus

#79
20210119134
2021-04-22

PLURALITY OF LIGHT-EMITTING MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME

#80
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2020-11-19

ORGANIC ELECTROLUMINESCENSE DEVICE AND ELECTRONIC APPARATUS

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2020-10-08

Organic electroluminescent device

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2020-08-13

Organic electroluminescent device

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2020-07-09

Organic electroluminescence device and display device including the same

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2020-04-30

Composition, organic light-emitting device, display device, photoelectric conversion apparatus, electronic apparatus, and moving object including the composition

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2020-04-09

Organic electroluminescence device and electronic apparatus provided with the same

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20200006664
2020-01-02

Anthracene derivatives, luminescent materials and organic electroluminescent devices

#87
20190312207
2019-10-10

ORGANIC ELECTROLUMINESCENT ELEMENT

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20190169097
2019-06-06

ORGANIC ELECTROLUMINESCENCE DEVICE

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20190100548
2019-04-04

Anthracycline Derivatives For Treating Tumor Diseases

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20190077732
2019-03-14

Compound and semiconductor material containing same

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20190027692
2019-01-24

CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME

#92
20180342681
2018-11-29

Light-emitting material for organic electroluminescent device, organic electroluminescent device using same, and material for organic electroluminescent device

#93
20180222825
2018-08-09

Method for material packaging and developing rotationally anisotropic materials

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20180212152
2018-07-26

Organic electroluminescence device and organic light emitting medium

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20180130968
2018-05-10

ORGANIC ELECTROLUMINESCENCE ELEMENT AND ELECTRONIC DEVICE

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20180019404
2018-01-18

Light-emitting material for organic electroluminescent device, organic electroluminescent device using same, and material for organic electroluminescent device

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20170271609
2017-09-21

Organic EL device and display unit

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2017-08-03

Anthracene derivatives, luminescent materials and organic electroluminescent devices

#99
20170162801
2017-06-08

ELECTRON BUFFERING MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE

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20170125687
2017-05-04

Organic electroluminescence device and anthracene derivative

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20170071896
2017-03-16

BH4 antagonists and methods related thereto

#102
20170025608
2017-01-26

Photoactive composition

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20170012214
2017-01-12

Organic light-emitting diode with high efficiency and long lifetime

#104
20160362428
2016-12-15

Synthesis and isolation of crystalline alkali metal arene radical anions

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20160064675
2016-03-03

Light-emitting material for organic electroluminescent device, organic electroluminescent device using same, and material for organic electroluminescent device

#106
20160056402
2016-02-25

Compound, and light-emitting device and electronic device including same

#107
20150380655
2015-12-31

ANTHRACENE DERIVATIVE, METHOD FOR PREPARING THE SAME, USE THEREOF AND ORGANIC LIGHT EMITTING DEVICE

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20150287929
2015-10-08

Organic electroluminescence device and organic light emitting medium

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20150287928
2015-10-08

Asymmetric monoanthracene derivative, material for organic electroluminescent device and organic electroluminescent device utilizing the same

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2015-09-10

Anthracycline derivatives for treating tumor diseases

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2015-02-26

Substituted tetraarylbenzenes

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20150021586
2015-01-22

Deuterated compounds for electronic applications

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20150001479
2015-01-01

Compound and organic light-emitting device including the same

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20140299849
2014-10-09

Naphthalene derivative, organic material including the same, and organic electroluminescent device including the same

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20140291653
2014-10-02

Organic electroluminescence device and anthracene derivative

#116
20140291532
2014-10-02

Compounds for neutron radiation detectors and systems thereof

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20140246657
2014-09-04

Anthracene derivatives and organic light emitting devices comprising the same

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20140187797
2014-07-03

Method for producing a pi-electron conjugated compound

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20140183505
2014-07-03

Binaphthalene derivatives, preparation method thereof and organic electronic device using the same

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20140183485
2014-07-03

Blue fluorescent compounds and organic light emitting diode devices using the same

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20140175416
2014-06-26

Organic electronic device containing an organic semiconductor material film which contains a leaving substituent-containing compound

#122
20140103319
2014-04-17

Anthracene derivative having a phenanthryl group

#123
20140008641
2014-01-09

Light-emitting material for organic electroluminescent device, organic electroluminescent device using same, and material for organic electroluminescent device

#124
20130328030
2013-12-12

Organic electroluminescence device and organic light emitting medium

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20130292665
2013-11-07

Anthracene compound and organic electroluminescence element using same

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2013-10-03

Substituted tetraarylbenzenes

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2013-08-22

Organic electroluminescent element, compounds and materials used for the organic electroluminescent element, and light-emitting, display and illuminating devices using the elements

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20130181201
2013-07-18

Deuterated compounds for electronic applications

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20130150607
2013-06-13

Alkylaromatic process

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20130069040
2013-03-21

Organic nanofiber structure based on self-assembled organogel, organic nanofiber transistor using the same, and method of manufacturing the organic nanofiber transistor

#131
20120326042
2012-12-27

Solution-grown crystals for neutron radiation detectors, and methods of solution growth

#132
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2012-12-06

Bianthracene compounds substituted by aromatic ring and their uses for luminescence materials

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2012-11-29

ORGANIC ELECTROLUMINESCENCE DEVICE

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2012-10-25

Compounds for a liquid-crystalline medium, and the use thereof for high-frequency components

#135
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2012-09-20

Organic electroluminescence device and anthracene derivative

#136
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2012-06-21

Methods for removing unsaturated aliphatic hydrocarbons from a hydrocarbon stream using an acidic molecular sieve

#137
20120157738
2012-06-21

Methods for removing unsaturated aliphatic hydrocarbons from a hydrocarbon stream using activated carbon

#138
20120153271
2012-06-21

Leaving substituent-containing compound, products produced using the same, and methods for producing the products

#139
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2012-05-24

Materials for organic electroluminescent devices

#140
20120065438
2012-03-15

Process for Syntheis of 10,10-Dibromo-9,9-dianthracene

#141
20110248250
2011-10-13

Organic light emitting device and materials for use in same

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2011-09-15

Fused ring compounds useful in organic thin-film transistors

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2011-06-30

Anthracene derivatives and organic electronic device using same

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2011-05-26

DEUTERATED COMPOUNDS FOR ELECTRONIC APPLICATIONS

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2011-05-19

Anthracene derivative and an organic electronic device using the same

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2011-05-12

Anthracene derivative and an organic electronic device using the same

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2011-03-24

Anthracene derivatives, luminescent materials and organic electroluminescent devices

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2011-03-17

Preparation of asymmetric anthracene derivatives and organic electroluminescent device using same

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2011-03-10

DEUTERATED COMPOUNDS FOR ELECTRONIC APPLICATIONS

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2011-03-03

Novel aromatic compound and organic electroluminescent element containing the same

#151
20110046380
2011-02-24

Method for producing unsaturated organic compound

#152
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2011-02-17

Deuterated compounds for electronic applications

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20110034744
2011-02-10

Organic electroluminescence device and anthracene derivative

#154
20100277061
2010-11-04

Organic electroluminescence device and organic light emitting medium

#155
20100270913
2010-10-28

Organic electroluminescence device and organic light emitting medium

#156
20100256923
2010-10-07

Compounds for neutron radiation detectors and systems thereof

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20100187512
2010-07-29

Polycyclic ring assembly compound and organic electroluminescent device employing the same

#158
20100187505
2010-07-29

Benzanthracene derivatives for organic electroluminescent devices

#159
20100006824
2010-01-14

Organic nanofiber structure based on self-assembled organogel, organic nanofiber transistor using the same, and method of manufacturing the organic nanofiber transistor

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2010-01-07

Anthracene derivatives, organic electronic devices using anthracene derivatives, and electronic apparatuses comprising organic electronic device

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20090321729
2009-12-31

Anthracene Derivatives and Organic Electroluminescent Devices Made by Using the Same

#162
20090230852
2009-09-17

Novel organic electroluminescent compounds and organic electroluminescent device using the same

#163
20090206748
2009-08-20

METHOD FOR PRODUCING AROMATIC COMPOUND AND AROMATIC COMPOUND

#164
20090189521
2009-07-30

Organic light emitting diode and method of manufacturing the same

#165
20090160326
2009-06-25

ORGANIC ELECTROLUMINESCENCE MATERIAL AND ELEMENT USING THE SAME

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20090146139
2009-06-11

Materials for organic electroluminescent devices

#167
20090021160
2009-01-22

MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE, METHOD FOR PRODUCING SAME AND ORGANIC ELECTROLUMINESCENT DEVICE

#168
20080233430
2008-09-25

LIGHT-EMITTING DEVICE AND AROMATIC COMPOUND

#169
20080210905
2008-09-04

ORGANIC-ELECTROLUMINESCENCE-MATERIAL-CONTAINING SOLUTION, METHOD FOR SYNTHESIZING ORGANIC ELECTROLUMINESCENCE MATERIAL, COMPOUND SYNTHESIZED BY THE METHOD, METHOD FOR FORMING THIN FILM OF ORGANIC ELECTROLUMINESCENCE MATERIAL, THIN FILM OF ORGANIC ELECTROLUMINESCENCE MATERIAL AND ORGANIC ELECTROLUMINESCENCE DEVICE

#170
20080197325
2008-08-21

Oligomeric is polyacene and semiconductor formulations

#171
20080193799
2008-08-14

Organic electroluminescence device

#172
20080191199
2008-08-14

Polyacene and semiconductor formulation

#173
20080171225
2008-07-17

Materials for organic electroluminescent devices

#174
20080152950
2008-06-26

Anthracene derivative and organic electroluminescent device using the same

#175
20080152948
2008-06-26

Light-emitting device and aromatic compound

#176
20080113215
2008-05-15

Electroluminescent Materials and Devices

#177
20080113101
2008-05-15

ORGANIC-ELECTROLUMINESCENCE-MATERIAL-CONTAINING SOLUTION, METHOD FOR FORMING THIN FILM OF ORGANIC ELECTROLUMINESCENCE MATERIAL, THIN FILM OF ORGANIC ELECTROLUMINESCENCE MATERIAL AND ORGANIC ELECTROLUMINESCENCE DEVICE

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20070285009
2007-12-13

BISANTHRACENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME

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20070252108
2007-11-01

Electroluminescent Materials and Devices

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20070237984
2007-10-11

Organic electroluminescence device and organic light emitting medium

#181
20070205412
2007-09-06

Anthracene derivative and organic electronic device using the same

#182
20070152565
2007-07-05

Light-emitting material for organic electroluminescent device, organic electroluminescent device using same, and material for organic electroluminescent device

#183
20070152208
2007-07-05

Optimised method for preparing anellated, polycyclic and polyheterocyclic aromatic compounds

#184
20070108892
2007-05-17

Binaphthalene derivatives, preparation method thereof and organic electronic device using the same

#185
20070106103
2007-05-10

Aromatic compound and organic electroluminescent device using same

#186
20070088185
2007-04-19

Anthrylarylene derivative, material for organic electroluminescence device and organic electroluminescence device using same

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20070060777
2007-03-15

Method for producing aromatic compound and aromatic compound

#188
20070055085
2007-03-08

Asymmetric monoanthracene derivative, material for organic electroluminescent device and organic electroluminescent device utilizing the same

#189
20070020481
2007-01-25

Synthesis process

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20070020480
2007-01-25

Synthesis process

#191
20070013296
2007-01-18

Biphenyl derivative, material for organic electroluminescence device, and organic electroluminescence device using the same

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20060216633
2006-09-28

Bisanthracene derivative and organic electroluminescence device using the same

#193
20060159959
2006-07-20

Organic electroluminescence device with organic compound layer containing lower than 500 ppm of a halogen-containing compound

#194
20060121311
2006-06-08

Organic electroluminescent devices

#195
20060083947
2006-04-20

Orangic electroluminescence device

#196
20060046097
2006-03-02

Anthracene derivatives and organic light emitting device using the same as a light emitting material

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20060043858
2006-03-02

Organic electroluminescence device and anthracene derivative

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20060033421
2006-02-16

Organic electroluminescence device and organic light emitting medium

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20060014046
2006-01-19

Luminescent material and organic electroluminescent device using the same

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20050245752
2005-11-03

Synthesis of unsymmetric anthracene compounds

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20050236974
2005-10-27

Condensed polycyclic compound and organic light-emitting device using the same

#202
20050233165
2005-10-20

Anthracene derivatives and organic electroluminescent devices made by using the same

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20050214565
2005-09-29

Aromatic compound and organic electroluminescent element containing the same

#204
20050192469
2005-09-01

Zeolite catalyst for the alkylation of aromatic compounds with olefins, alcohols or polyalkylated aromatic compounds

#205
20050095454
2005-05-05

[ORGANIC ELECTRO-LUMINANCE DEVICE AND FABRICATING METHOD THEREOF]

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20050095453
2005-05-05

Organic element for electroluminescent devices

#207
20050095452
2005-05-05

Organic element for electroluminescent devices

#208
20050064233
2005-03-24

Organic electroluminescence device and organic light emitting medium

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20050058853
2005-03-17

Green organic light-emitting diodes

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19023407
2025-05-27

Anthracene-based compound, and preparation method therefor and use thereof as solar thermal fuel