ClassID:

92117

C07C67/56 - CPC Classification

Classification description:

Preparation of carboxylic acid esters; Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption

Recent Application in this class:
#1
20260070868
2026-03-12

PROCESSES FOR RECOVERING DIALKYL TEREPHTHALATES FROM POLYESTER COMPOSITIONS

#2
20260055937
2026-02-26

HIGH-PRESSURE FLUID CHROMATOGRAPHY SYSTEM USING INTERIOR-TO-EXTERIOR COLUMN PRESSURE EQUALIZATION

#3
20250382433
2025-12-18

METHOD FOR PRODUCING POLYESTER RESIN BY USING REGENERATED BIS(2-HYDROXYETHYL) TEREPHTHALATE AQUEOUS SOLUTION

#4
20250376571
2025-12-11

METHOD FOR MANUFACTURING A RECYCLED MATERIAL COMPOSITION

#5
20250243146
2025-07-31

HIGHLY UNSATURATED FATTY ACID OR HIGHLY UNSATURATED FATTY ACID ETHYL ESTER WITH REDUCED ENVIRONMENTAL POLLUTANTS, AND METHOD FOR PRODUCING SAME

#6
20250153114
2025-05-15

POLYIMIDE-CONTAINING FILTRATION MEMBRANE, FILTERS, AND METHODS

#7
20250090978
2025-03-20

METHOD OF PURIFICATION AND PURIFIED PRODUCTS

#8
20250066576
2025-02-27

METHOD FOR PREPARING RECYCLED BIS(2-HYDROXYETHYL) TEREPHTHALATE THROUGH MULTI-STEP DEPOLYMERIZATION

#9
20250026708
2025-01-23

PROCESS FOR PREPARATION OF TRIHEPTANOIN

#10
20240351973
2024-10-24

METHOD FOR PURIFYING A TEREPHTHALATE DIESTER MONOMER BY ADSORPTION

#11
20240286110
2024-08-29

CARBON MICROSPHERE CHROMATOGRAPHIC MATERIAL

#12
20240270928
2024-08-15

METHOD FOR PRODUCING BIS-2-HYDROXYETHYL TEREPHTHALATE THROUGH CONTINUOUS DEPOLYMERIZATION

#13
20240247843
2024-07-25

COOLING LOOP WITH A SUPERCRITICAL FLUID SYSTEM USING COMPRESSED REFRIGERANT FLUID FLOW WITH A POSITIVE JOULE THOMSON COEFFICIENT

#14
20240239737
2024-07-18

Synthesis of Triisoamyl Citrate (Triisopentanol) and its Applications as a Solvent, Plastizer and Component of Cosmetic and Aerosol Formulations

#15
20240228421
2024-07-11

COMPOSITION AND METHOD FOR PREPARING THE SAME

#16
20240166591
2024-05-23

Pharmaceutical Products Based on Cannabinoid Acid Esters

#17
20240075407
2024-03-07

Method of purification and purified products

#18
20230399462
2023-12-14

Method for purifying bis-2-hydroxylethyl terephthalate and polyester resin comprising same

#19
20230340548
2023-10-26

METHOD FOR FATTY ACID ALKYL ESTER SYNTHESIS AND THEIR EXTRACTION FROM OLEAGINOUS MICROBES

#20
20230183165
2023-06-15

HIGHLY UNSATURATED FATTY ACID OR HIGHLY UNSATURATED FATTY ACID ETHYL ESTER WITH REDUCED ENVIRONMENTAL POLLUTANTS, AND METHOD FOR PRODUCING SAME

#21
20230095681
2023-03-30

METHOD FOR PURIFYING AN ALKYLENE GLYCOL MONOALKYL ETHER CARBOXYLIC ACID ESTER HAVING HIHG-PURITY USED IN PHOTO RESIST PROCESS

#22
20230067221
2023-03-02

PROCESS FOR PURIFYING BIS(2-HYDROXYETHYL)TEREPHTHALATE

#23
20230060362
2023-03-02

Method for improving hue of recycled bis-2-hydroxylethyl terephthalate by using ionic liquids

#24
20230028123
2023-01-26

METHOD FOR OBTAINING A PURIFIED DIESTER EFFLUENT BY DEPOLYMERISING A POLYESTER COMPRISING OPAQUE POLYETHYLENE TEREPHTHALATE

#25
20220234981
2022-07-28

EXTRACTION AND PURIFICATION OF NATURAL FERULATE AND COUMARATE FROM BIOMASS

#26
20220220059
2022-07-14

PROCESS FOR CRYSTALLIZATION OF HIGH PURITY LUTEIN ESTERS FROM MARIGOLD EXTRACTS

#27
20220177407
2022-06-09

Neutralization/water separation device for esterified product and neutralization/water separation method for esterified product

#28
20220119335
2022-04-21

METHOD FOR OBTAINING OLEACEIN AND OLEOMISSIONAL TYPE SECOIRIDOIDS AND FOR PRODUCING RESPECTIVE PHARMACEUTICAL PREPARATIONS

#29
20220089519
2022-03-24

Method for preparation of decolorized acetoacetylated glycerol with activated carbon

#30
20220034555
2022-02-03

Cooling loop with a supercritical fluid system using compressed refrigerant fluid flow with a positive Joule Thomson coefficient

#31
20220033341
2022-02-03

EXTRACTION OF NATURAL FERULATE AND COUMARATE FROM BIOMASS

#32
20210348805
2021-11-11

Supercritical fluid chromatography system

#33
20210269388
2021-09-02

Highly unsaturated fatty acid or highly unsaturated fatty acid ethyl ester with reduced environmental pollutants, and method for producing same

#34
20210230204
2021-07-29

Industrial utilization method for and stevioside and chlorogenic acid of

#35
20210230200
2021-07-29

INDUSTRIAL METHOD FOR SIMULTANEOUSLY PREPARING STEVIA REBAUDIANA CHLOROGENIC ACID AND STEVIOSIDE

#36
20210122699
2021-04-29

Methods for manufacturing and decolorizing dioctyl terephthalate

#37
20210030707
2021-02-04

Composition containing eicosapentaenoic acid alkyl ester, and method for producing same

#38
20200399199
2020-12-24

Emodin succinyl ester compound, preparation method therefor and application thereof

#39
20200269192
2020-08-27

POLYIMIDE-CONTAINING FILTRATION MEMBRANE, FILTERS, AND METHODS

#40
20200222356
2020-07-16

Composition containing eicosapentaenoic acid alkyl ester, and method for producing same

#41
20200188814
2020-06-18

SUPERCRITICAL FLUID CHROMATOGRAPHY SYSTEM

#42
20200181060
2020-06-11

Extraction of natural ferulate and coumarate from biomass

#43
20200115315
2020-04-16

Process for purification of vinyl acetate for use in polymerization in the presence of ethylene

#44
20200056815
2020-02-20

Cooling loop with a supercritical fluid system using compressed refrigerant fluid flow with a positive Joule-Thomson coefficient

#45
20200002264
2020-01-02

High-purity carboxylic acid ester and method for producing same

#46
20190337883
2019-11-07

Highly unsaturated fatty acid or highly unsaturated fatty acid ethyl ester with reduced environmental pollutants, and method for producing same

#47
20190308925
2019-10-10

PROCESS FOR THE PREPARATION OF DIALKYL TEREPHTHALATES FROM RECYCLE FEEDSTOCKS

#48
20190281855
2019-09-19

Refined chlorogenic acid-containing composition

#49
20190274985
2019-09-12

Refined chlorogenic acid-containing composition manufacturing method

#50
20190201467
2019-07-04

Extracts and isolated compounds from for treatment of ulcer

#51
20190192469
2019-06-27

Oleocanthal isolation and cancer treatment

#52
20190161595
2019-05-30

Process for the depolymerization of a polyester comprising opaque polyethylene terephthalate

#53
20190126264
2019-05-02

Ion exchange resins, purification methods and methods of making ionic resins

#54
20190099737
2019-04-04

Carbon sorbent for removal of metal catalysts from pharmaceuticals

#55
20190071384
2019-03-07

Method for producing (meth)acrylic esters

#56
20190062181
2019-02-28

Dehydration of water containing source of formaldehyde, and a method for producing an ethylenically unsaturated carboxylic ester

#57
20190015375
2019-01-17

Composition containing eicosapentaenoic acid alkyl ester, and method for producing same

#58
20190010522
2019-01-10

Methods of making capsinoids by biosynthetic processes

#59
20190009267
2019-01-10

Purification process for hydrolysable organic solvent

#60
20180361319
2018-12-20

Method for improved reactive monomer production with membrane filtration

#61
20180305291
2018-10-25

Highly unsaturated fatty acid or highly unsaturated fatty acid ethyl ester with reduced environmental pollutants, and method for producing same

#62
20180273465
2018-09-27

HIGH-PURITY CARBOXYLIC ACID ESTER AND METHOD FOR PRODUCING SAME

#63
20180222842
2018-08-09

Water elimination method

#64
20180171178
2018-06-21

Method for the separation of the isoprenic constituents of guayule

#65
20180162800
2018-06-14

Use of the Irritating Principal Oleocanthal in Olive Oil, as Well as Structurally and Functionally Similar Compounds

#66
20180147176
2018-05-31

Composition containing eicosapentaenoic acid alkyl ester, and method for producing same

#67
20180134652
2018-05-17

METHOD FOR PURIFYING AN ESTER COMPOUND

#68
20180134651
2018-05-17

METHOD OF PURIFYING TEREPHTHALATE BASED ESTER COMPOUNDS

#69
20180118658
2018-05-03

(Meth)acrylate manufacturing method

#70
20180112896
2018-04-26

SUPERCRITICAL FLUID CHROMATOGRAPHY SYSTEM

#71
20180105544
2018-04-19

Concerted processes for forming 1,2,4-trihydroxybenzene from hydroquinone

#72
20180022688
2018-01-25

Compound, and separation method, synthesis method and use thereof

#73
20170334828
2017-11-23

Method for preparation of pharmaceutically acceptable chlorogenic acid

#74
20170305833
2017-10-26

Method for producing composition containing purified chlorogenic acids

#75
20170275229
2017-09-28

Process for preparation of acitrecin

#76
20170267627
2017-09-21

Process for workup of a crude ester comprising esterification catalyst hydrolysis product in suspended particulate form

#77
20170266250
2017-09-21

Compositions and methods of antiallergic phorbol ester and phorbol derivatives as the main active ingredients from the seeds of aquilaria malaccensis

#78
20170252315
2017-09-07

Composition containing eicosapentaenoic acid alkyl ester, and method for producing same

#79
20170246558
2017-08-31

Supercritical fluid chromatography system

#80
20170216740
2017-08-03

Process for operating a simulated moving bed reactor

#81
20170204343
2017-07-20

Powder mixture of absorbent fibres

#82
20170143782
2017-05-25

Extracts and isolated compounds from for treatment of ulcer

#83
20170081272
2017-03-23

Highly unsaturated fatty acid or highly unsaturated fatty acid ethyl ester with reduced environmental pollutants, and method for producing same

#84
20170050167
2017-02-23

Method to obtain methylene malonate via bis(hydroxymethyl) malonate pathway

#85
20170022142
2017-01-26

METHOD FOR THE PRODUCTION OF HIGH-PURITY GLYCEROL DIMETHACRYLATE

#86
20170014733
2017-01-19

Use of a fiber conduit contactor for extraction

#87
20160376217
2016-12-29

Purification of (meth)acrylic esters by membrane separation dehydration

#88
20160355456
2016-12-08

PLANT EXTRACTS AND USE THEREOF

#89
20160311748
2016-10-27

Process for the preparation and isolation of carboxylic esters

#90
20160297742
2016-10-13

Use of metal scavengers for removal of ruthenium residues

#91
20160237018
2016-08-18

Process for the synthesis of [6,6]-phenyl-Cbutyric acid pentyl ester (PC61BP)

#92
20160213042
2016-07-28

Chlorogenic acid-containing composition, method for manufacturing same, and drink or food item

#93
20160208296
2016-07-21

Method for producing high purity omega-3 fatty acid ethyl ester

#94
20160207871
2016-07-21

Method for post-treating polyol esters

#95
20160200661
2016-07-14

Salvianolic acid compound T, preparation method therefor, and use thereof

#96
20160193546
2016-07-07

METHOD FOR SEPARATING FAT-SOLUBLE SUBSTANCE BY SIMULATED MOVING BED CHROMATOGRAPHY - AND DEVICE FOR SAME

#97
20160176798
2016-06-23

Separation of propionic acid from acrylic acid

#98
20160145184
2016-05-26

Process for equilibrium-limited reactions

#99
20160122278
2016-05-05

PROCESS TO PREPARE LEVULINIC ACID

#100
20160096798
2016-04-07

Method for purifying dioctyl phthalate

#101
20160075624
2016-03-17

Process for preparing and separating monodisperse polyethylene glycol

#102
20160026088
2016-01-28

Method for manufacturing organic processing fluid for patterning of chemical amplification type resist film, organic processing fluid for patterning of chemical amplification type resist film, pattern forming method, method for manufacturing electronic device, and electronic device

#103
20150343415
2015-12-03

Method to obtain methylene malonate via bis(hydroxymethyl) malonate pathway

#104
20150329791
2015-11-19

Biodiesel cold filtration process

#105
20150266802
2015-09-24

Systems and methods of refining natural oil feedstocks and derivatives thereof

#106
20150218081
2015-08-06

Method to obtain methylene malonate via bis(hydroxymethyl) malonate pathway

#107
20150183641
2015-07-02

Hydrothermal carbonization of sewage wastes

#108
20150126760
2015-05-07

Highly unsaturated fatty acid or highly unsaturated fatty acid ethyl ester with reduced environmental pollutants, and method for producing same

#109
20150053616
2015-02-26

Dehydration of water containing source of formaldehyde, and a method for producing an ethylenically unsaturated carboxylic ester

#110
20150045579
2015-02-12

Process for purification of methyl methacrylate using molecular sieve membranes

#111
20140135391
2014-05-15

Method for manufacturing refined chlorogenic acids composition

#112
20130310594
2013-11-21

Purification of 1,1-disubstituted ethylene

#113
20130211150
2013-08-15

Chemisorption of ethyl acetate during hydrogenation of acetic acid to ethanol

#114
20130131165
2013-05-23

Process for production of purified chlorogenic acid-containing pharmaceutical preparation

#115
20130039872
2013-02-14

ESTER PREPARATION WITH AFTER-TREATMENT

#116
20120238746
2012-09-20

Processes and intermediates for preparing a macrocyclic protease inhibitor of HCV

#117
20120204283
2012-08-09

Spearmint Plant Mentha spicata L. Denominated KI-MsEM0042

#118
20120190882
2012-07-26

Efficient isolation of cimiracemate A, and methods of use

#119
20120123139
2012-05-17

BIODIESEL PURIFICATION BY A CONTINUOUS REGENERABLE ADSORBENT PROCESS

#120
20110247521
2011-10-13

Scalable process for synthesis of a curable wax

#121
20110245341
2011-10-06

Process for the preparation of non-genotoxic diacetylrhein (diacerein) and formulations comprising non-genotoxic diacetylrhein

#122
20110147650
2011-06-23

Compositions produced from plasticiser esters

#123
20110124894
2011-05-26

METHOD FOR OBTAINING LONG CHAIN ALIPHATIC ALCOHOLS AND FATTY ACIDS FROM SUGAR CANE MUD AND RELATED WAX ESTERS

#124
20110087044
2011-04-14

Process for preparing polyol esters

#125
20110087043
2011-04-14

Site-specific inhibitors of histone methyltransferase (HMTASE) and process of preparation thereof

#126
20110031102
2011-02-10

Purification of hydroformylated and hydrogenated fatty alkyl ester compositions

#127
20110020424
2011-01-27

Use of the irritating principal oleocanthal in olive oil, as well as structurally and functionally similar compounds

#128
20100292498
2010-11-18

Site-specific inhibitors of histone methyltransferase [HMTase] and process of preparation thereof

#129
20100274034
2010-10-28

METHOD AND APPARATUS FOR PRODUCING FATTY ACID ALKYL ESTER AND/OR GLYCERIN

#130
20100249352
2010-09-30

Process for the production of diols

#131
20100210866
2010-08-19

PLANT EXTRACTS AND USE THEREOF

#132
20100108940
2010-05-06

Ester production

#133
20100093530
2010-04-15

Method of preparing a composition using argentation chromatography

#134
20100041889
2010-02-18

Processes and intermediates for preparing a macrocyclic protease inhibitor of HCV

#135
20100022019
2010-01-28

Method of monitoring adsorbent bed breakthrough in a process for producing alkyl esters from vegetable or animal oil and from an aliphatic monoalcohol

#136
20100004417
2010-01-07

Method for the adsorptive purification of alkyl methacrylates

#137
20090221780
2009-09-03

Process for storing a monomer phase which is liquid under the conditions of storage

#138
20090199460
2009-08-13

Biodiesel purification by a continuous regenerable adsorbent process

#139
20090183421
2009-07-23

Process for purification of fatty acid alkyl esters and use of agents to facilitate such purification

#140
20090182145
2009-07-16

Process for preparing carboxylic acid derivatives

#141
20090143544
2009-06-04

Integrated chemical processes for industrial utilization of seed oils

#142
20090143466
2009-06-04

Isolation of atraric acid, synthesis of atraric acid derivatives, and use of atraric acid and the derivatives thereof for the treatment of benign prostatic hyperplasia, prostate carcinoma and spinobulbar muscular atrophy

#143
20090118433
2009-05-07

Process for producing a polyfluoroalkyl (meth)acrylate

#144
20090092736
2009-04-09

Method for Production of Chlorogenic Acid-Containing Material

#145
20090076142
2009-03-19

USE OF THE IRRITATING PRINCIPAL OLEOCANTHAL IN OLIVE OIL, AS WELL AS STRUCTURALLY AND FUNCTIONALLY SIMILAR COMPOUNDS

#146
20090053381
2009-02-26

Method of producing chlorogenic acid composition

#147
20080300305
2008-12-04

METHOD OF PURIFYING PRAVASTATIN

#148
20080275267
2008-11-06

Plasticiser esters

#149
20080234446
2008-09-25

Process for transporting in the tank of a tank truck or tanker ship a liquid monomer phase withdrawn from a storage vessel

#150
20080194887
2008-08-14

SEPARATION OF FLUOROUS COMPOUNDS

#151
20080045742
2008-02-21

Single step green process for the preparation of substituted cinnamic esters with -selectivity

#152
20080039641
2008-02-14

Process for preparing brevifoliol

#153
20070292540
2007-12-20

Extracts and Methods Comprising Cinnamon Species

#154
20070219141
2007-09-20

Plant Materials Extraction Method

#155
20070191650
2007-08-16

Method of producing fatty acid ester

#156
20070181504
2007-08-09

Method of preparing a composition using argentation chromatography

#157
20070175091
2007-08-02

Biodiesel cold filtration process

#158
20070151146
2007-07-05

Processes of Producing Biodiesel and Biodiesel Produced Therefrom

#159
20070105999
2007-05-10

Plasticiser

#160
20060270868
2006-11-30

Plasticiser esters

#161
20060205970
2006-09-14

Production of carboxylic acids or carboxylic acid esters

#162
20060178525
2006-08-10

Method for the continuous production of a compound that carries at least two functional groups

#163
20060076271
2006-04-13

Process for the selective desulphurization of olefinic gasolines, comprising a hydrogen purification step

#164
20060014974
2006-01-19

Process for producing fatty acid alkyl esters and glycerol of high-purity

#165
20050283032
2005-12-22

Separation of fluorous compounds

#166
20050154221
2005-07-14

Integrate chemical processes for industrial utilization of seed oils

#167
20050113446
2005-05-26

Method of purifying pravastatin

#168
20050095332
2005-05-05

Extraction of phenolic antioxidants

#169
20050081436
2005-04-21

Purification of biodiesel with adsorbent materials

#170
20050038271
2005-02-17

Process for extraction and purification of lutein, zeaxanthin and rare carotenoids from marigold flowers and plants

#171
20050004337
2005-01-06

Process for producing a polyfluoroalkyl (meth) acrylate

#172
20050003499
2005-01-06

Ion-exchange filtration of fermentation broth

#173
18399457
2024-05-07

Preparation method of resveratrol nervonic acid ester

#174
17568911
2022-12-27

Preparation method of eicosapentaenoic acid ethyl ester

#175
17128102
2021-10-26

Pleuromulin acitretin ester with antibacterial activity and a method of preparing the same

#176
17026221
2021-07-27

Method of preparing a cinnamyl alcohol retinoic acid ester with antioxidant and antibacterial activities

#177
16996499
2020-11-17

Hydroxytyrosol acitretin ester with antioxidant activity and a method of preparing the same

#178
16724206
2020-05-05

Hydroxytyrosol dihydrocaffeate having antioxidant activity and a method for preparing the same

#179
16171953
2019-09-17

Methods for extracting and purifying capsinoids such as capsiate and dihydrocapsiate from sp. fruit