ClassID:

204474

H01J1/34 - CPC Classification

Classification description:

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps; Main electrodes Photo-emissive cathodes

Recent Application in this class:
#1
20260120990
2026-04-30

ELECTRON GUN AND ELECTRON MICROSCOPE

#2
20260066607
2026-03-05

LIGHT SOURCE SYSTEM AND METHOD OF OPERATION

#3
20260051451
2026-02-19

ELECTRON BEAM DEVICES WITH SEMICONDUCTOR ULTRAVIOLET LIGHT SOURCE

#4
20250385062
2025-12-18

SUBSTRATE STACK EPITAXIES FOR PHOTOCATHODES FOR EXTENDED WAVELENGTHS

#5
20250246392
2025-07-31

DESIGN OF LATTICE MATCHED PHOTOCATHODES FOR EXTENDED WAVELENGTHS

#6
20250140505
2025-05-01

ELECTRONICALLY ADDRESSABLE DISPLAY INCORPORATED INTO A TRANSMISSION MODE SECONDARY ELECTRON IMAGE INTENSIFIER

#7
20240412939
2024-12-12

ELECTRON BEAM APPLICATION DEVICE AND METHOD FOR CREATING DETECTION DATA IN ELECTRON BEAM APPLICATION DEVICE

#8
20240355572
2024-10-24

PHOTOELECTRIC CONVERSION DEVICE AND PHOTOELECTRIC CONVERSION METHOD

#9
20240282542
2024-08-22

DEVICES AND METHODS INVOLVING SEMICONDUCTING MATERIAL(S) FOR PHOTOCATHODES

#10
20240266134
2024-08-08

Electron emitter structure, external photoelectric effect emitter, particle collecting device, tunnel surface emitter, semiconductor- based direct emitter and liquid ioniser comprising same, gas sensor comprising an emitter or emitter structure, method for generating free electrons, and method for collecting particles

#11
20240242913
2024-07-18

METHOD FOR PROTECTING REACTIVE MATERIALS WITH ATOMICALLY THIN FILM

#12
20240234072
2024-07-11

A UV SENSITIVE PHOTOCATHODE, A METHOD FOR PRODUCING A UV SENSITIVE PHOTOCATHODE, AND A DETECTOR FOR MEASURING UV RADIATION

#13
20240222062
2024-07-04

Electron Gun, Electron Beam Applying Device, and Irradiation Position Shifting Method

#14
20240170247
2024-05-23

Lattice matched photocathodes for extended wavelengths

#15
20240170246
2024-05-23

PHOTOCATHODE INCLUDING NANOSTRUCTURES FOR EXTENDED WAVELENGTHS

#16
20240156101
2024-05-16

PATHOGENIC CONTROL COMPOSITIONS AND METHODS

#17
20240145202
2024-05-02

SUBSTRATE STACK EPITAXIES FOR PHOTOCATHODES FOR EXTENDED WAVELENGTHS

#18
20240136139
2024-04-25

A UV SENSITIVE PHOTOCATHODE, A METHOD FOR PRODUCING A UV SENSITIVE PHOTOCATHODE, AND A DETECTOR FOR MEASURING UV RADIATION

#19
20240120168
2024-04-11

Electron gun and electron beam application apparatus

#20
20230343541
2023-10-26

Photoelectric-surface electron source

#21
20230282670
2023-09-07

Compact proximity focused image sensor

#22
20230215678
2023-07-06

ELECTRONICALLY-TUNABLE, AIR-STABLE, NEGATIVE ELECTRON AFFINITY SEMICONDUCTOR PHOTOCATHODE

#23
20230187161
2023-06-15

Photocathode, and method for manufacturing photocathode

#24
20230103140
2023-03-30

Dielectric coated plasmonic photoemitter

#25
20220406558
2022-12-22

Electron gun and electron microscope

#26
20220359146
2022-11-10

Electron gun, electron beam applicator, emission axis verification method for electron beam emitted from photocathode, and emission axis alignment method for electron beam emitted from photocathode

#27
20220336179
2022-10-20

CATHODE MEMBER FOR ELECTRON BEAM GENERATION, AND METHOD FOR MANUFACTURING THE SAME

#28
20220310349
2022-09-29

Photo-cathode for a vacuum system

#29
20220301804
2022-09-22

ELECTRON BEAM DEVICES WITH SEMICONDUCTOR ULTRAVIOLET LIGHT SOURCE

#30
20220181111
2022-06-09

Photocathode kit, electron gun, and electron beam applicator

#31
20210398768
2021-12-23

Electron photoinjector

#32
20210375578
2021-12-02

Incident axis alignment method for electron gun equipped with photocathode, computer program, and electron gun equipped with photocathode

#33
20210366972
2021-11-25

Compact proximity focused image sensor

#34
20210335566
2021-10-28

Electronically addressable display incorporated into a transmission mode secondary electron image intensifier

#35
20210319970
2021-10-14

ELECTRON BEAM APPLICATION DEVICE

#36
20210142973
2021-05-13

Electron-emitting element

#37
20210134551
2021-05-06

Electron gun, electron beam applicator, method for releasing electrons using electron gun, and method for adjusting focal position of electron beam

#38
20210098223
2021-04-01

Plasmonic photocathode emitters

#39
20200381227
2020-12-03

Hybrid solar generator

#40
20200328056
2020-10-15

Photocathode with nanowires and method of manufacturing such a photocathode

#41
20200266019
2020-08-20

Plasmonic photocathode emitters at ultraviolet and visible wavelengths

#42
20200161072
2020-05-21

Fast spin-polarized electron source

#43
20200111637
2020-04-09

Photocathode designs and methods of generating an electron beam using a photocathode

#44
20200090895
2020-03-19

Metal encapsulated photocathode electron emitter

#45
20200083014
2020-03-12

Electron photoinjector

#46
20200058477
2020-02-20

Electron multiplier production method and electron multiplier

#47
20200021112
2020-01-16

Efficient low-voltage grid for a cathode

#48
20190164734
2019-05-30

Electron multiplier production method and electron multiplier

#49
20190108967
2019-04-11

Electron beam generation and measurement

#50
20190108964
2019-04-11

Photocathode designs and methods of generating an electron beam using a photocathode

#51
20190108963
2019-04-11

Silicon electron emitter designs

#52
20190066962
2019-02-28

Photocathode including silicon substrate with boron layer

#53
20190049851
2019-02-14

Electron source

#54
20180154609
2018-06-07

Thin diamond film bonding providing low vapor pressure at high temperature

#55
20180096829
2018-04-05

Multiband photocathode and associated detector

#56
20180025881
2018-01-25

Photoelectric surface, photoelectric conversion tube, image intensifier, and photomultiplier tube

#57
20180005791
2018-01-04

High brightness boron-containing electron beam emitters for use in a vacuum environment

#58
20170358432
2017-12-14

Hybrid solar generator

#59
20170264071
2017-09-14

Electron injector and free electron laser

#60
20170243712
2017-08-24

Electron emission device and transistor provided with the same

#61
20170069455
2017-03-09

Photocathode including silicon substrate with boron layer

#62
20170062169
2017-03-02

Photocathode

#63
20170047207
2017-02-16

Electron source

#64
20170018391
2017-01-19

Image intensifier with indexed compliant anode assembly

#65
20160343532
2016-11-24

Photocathode including field emitter array on a silicon substrate with boron layer

#66
20160301180
2016-10-13

Electron injector and free electron laser

#67
20160233044
2016-08-11

Transmission mode photocathode

#68
20160225571
2016-08-04

Chemically Stable Visible Light Photoemission Electron Source

#69
20160203937
2016-07-14

Planar field emitters and high efficiency photocathodes based on ultrananocrystalline diamond

#70
20160181050
2016-06-23

Integrated photoemission sources and scalable photoemission structures

#71
20160172144
2016-06-16

Activation chamber, kit used in treatment device and treatment device, for lowering electron affinity

#72
20160163492
2016-06-09

DETECTOR AND METHOD FOR DETECTING ULTRAVIOLET RADIATION

#73
20160093460
2016-03-31

Photocathode device that replenishes photoemissive coating

#74
20160089740
2016-03-31

Bonding method for thin film diamond providing low vapor pressure at high temperature

#75
20150279606
2015-10-01

Semi-transparent photocathode with improved absorption rate

#76
20150255241
2015-09-10

Integrated photoemission sources and scalable photoemission structures

#77
20150235799
2015-08-20

Versatile spin-polarized electron source

#78
20150146865
2015-05-28

Field emission device having field emitter including photoelectric material and method of manufacturing the same

#79
20150050770
2015-02-19

Process for producing layered member and layered member

#80
20150044497
2015-02-12

Thin diamond film bonding providing low vapor pressure at high temperature

#81
20150041674
2015-02-12

Chemically stable visible light photoemission electron source

#82
20140152175
2014-06-05

Photocathode enhancement system

#83
20140034816
2014-02-06

Photocathode including silicon substrate with boron layer

#84
20130293100
2013-11-07

Graphene shield enhanced photocathodes and methods for making the same

#85
20130248815
2013-09-26

Semiconductor photocathode and method for manufacturing the same

#86
20130134869
2013-05-30

Photo cathode for use in a vacuum tube as well as such as vacuum tube

#87
20120235036
2012-09-20

Inspection device

#88
20120181429
2012-07-19

Electron emission device having an electrodes' arrangement and an antenna circuit with operational frequency in THz-range

#89
20110215717
2011-09-08

High voltage switch triggered by a laser-photocathode subsystem

#90
20110180807
2011-07-28

Infrared external photoemissive detector

#91
20110140074
2011-06-16

ROOM TEMPERATURE DISPENSER PHOTOCATHODE

#92
20110089825
2011-04-21

Photocathode

#93
20110089397
2011-04-21

Spin-polarized electron source

#94
20100253218
2010-10-07

Photocathode, electron tube, and photomultiplier tube

#95
20100197069
2010-08-05

Process for producing layered member and layered member

#96
20100108983
2010-05-06

Electron beam emitting device with a superlattice structure

#97
20100102245
2010-04-29

Photocathode with nanomembrane

#98
20100096985
2010-04-22

Photocathode, photomultiplier and electron tube

#99
20090273281
2009-11-05

PHOTOCATHODE AND ELECTRON TUBE HAVING THE SAME

#100
20090261727
2009-10-22

Field-emission cathode, with optical control

#101
20090206283
2009-08-20

Electron emission device of high current density and high operational frequency

#102
20090127642
2009-05-21

PHOTOELECTRIC SURFACE, ELECTRON TUBE COMPRISING SAME, AND METHOD FOR PRODUCING PHOTOELECTRIC SURFACE

#103
20090041195
2009-02-12

Laser stimulated cathode

#104
20090032797
2009-02-05

Photocathode

#105
20080169436
2008-07-17

Electron beam lithography method and apparatus using a dynamically controlled photocathode

#106
20080150607
2008-06-26

Device and method for signal processing

#107
20070296335
2007-12-27

Process for Producing Layered Member and Layered Member

#108
20070228286
2007-10-04

Polarized pulsed front-end beam source for electron microscope

#109
20070176160
2007-08-02

Electron tube

#110
20070096648
2007-05-03

Photocathode comprising a plurality of openings on an electron emission layer

#111
20060170324
2006-08-03

Fabrication of group III-nitride photocathode having Cs activation layer

#112
20060138395
2006-06-29

Semiconductor photoelectric surface and its manufacturing method, and photodetecting tube using semiconductor photoelectric surface

#113
20060120684
2006-06-08

Photodetector

#114
20060055321
2006-03-16

Hetero-junction electron emitter with Group III nitride and activated alkali halide

#115
20060038473
2006-02-23

Photocathode plate and electron tube

#116
20050206314
2005-09-22

Photocathode

#117
20050174052
2005-08-11

Transmission type photocathode including light absorption layer and voltage applying arrangement and electron tube

#118
20050168144
2005-08-04

Photocathode

#119
20050045866
2005-03-03

Photocathode having A1GaN layer with specified Mg content concentration

#120
18796351
2025-06-17

And manufacturing methods of SWIR I2TUBE via heterogeneous wafer integration

#121
17846498
2023-05-16

Method of producing microrods for electron emitters, and associated microrods and electron emitters

#122
17402171
2024-01-23

Alkali semi-metal films and method and apparatus for fabricating them

#123
16449137
2020-08-04

Wafer scale image intensifier

#124
16440933
2020-01-14

Photocathodes with protective in-situ graphene gas barrier films and method of making the same

#125
15995946
2019-06-25

Image intensifier with stray particle shield

#126
15644711
2019-07-16

Photocathodes with protective in-situ graphene gas barrier films and method of making the same

#127
14608777
2018-03-13

Alkali semi-metal films and method and apparatus for fabricating them