Patents-Review.com
ClassID:

205822 ⎘

H01J2201/3423 - CPC Classification

Classification description:

Electrodes common to discharge tubes; Photoemissive electrodes; Cathodes; Composition of the emitting surface Semiconductors, e.g. GaAs, NEA emitters

Recent Application in this class:
#1
20260051451
2026-02-19

ELECTRON BEAM DEVICES WITH SEMICONDUCTOR ULTRAVIOLET LIGHT SOURCE

 #2
20250385062
2025-12-18

SUBSTRATE STACK EPITAXIES FOR PHOTOCATHODES FOR EXTENDED WAVELENGTHS

 #3
20250246392
2025-07-31

DESIGN OF LATTICE MATCHED PHOTOCATHODES FOR EXTENDED WAVELENGTHS

 #4
20250140505
2025-05-01

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

 #5
20240282542
2024-08-22

DEVICES AND METHODS INVOLVING SEMICONDUCTING MATERIAL(S) FOR PHOTOCATHODES

 #6
20240242913
2024-07-18

METHOD FOR PROTECTING REACTIVE MATERIALS WITH ATOMICALLY THIN FILM

 #7
20240222062
2024-07-04

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

 #8
20240170247
2024-05-23

Lattice matched photocathodes for extended wavelengths

 #9
20240145202
2024-05-02

SUBSTRATE STACK EPITAXIES FOR PHOTOCATHODES FOR EXTENDED WAVELENGTHS

 #10
20220301804
2022-09-22

ELECTRON BEAM DEVICES WITH SEMICONDUCTOR ULTRAVIOLET LIGHT SOURCE

 #11
20210335566
2021-10-28

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

 #12
20210319970
2021-10-14

ELECTRON BEAM APPLICATION DEVICE

 #13
20210142973
2021-05-13

Electron-emitting element

 #14
20210098223
2021-04-01

Plasmonic photocathode emitters

 #15
20200328056
2020-10-15

Photocathode with nanowires and method of manufacturing such a photocathode

 #16
20200266019
2020-08-20

Plasmonic photocathode emitters at ultraviolet and visible wavelengths

 #17
20200161072
2020-05-21

Fast spin-polarized electron source

 #18
20200111637
2020-04-09

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

 #19
20200090895
2020-03-19

Metal encapsulated photocathode electron emitter

 #20
20190378707
2019-12-12

Electrical potential energy to electrical kinetic energy converter, ozone generator, and light emitter

 #21
20190189408
2019-06-20

Photocathode assembly of vacuum photoelectronic device with a semi-transparent photocathode based on nitride gallium compounds

 #22
20190108967
2019-04-11

Electron beam generation and measurement

 #23
20190108964
2019-04-11

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

 #24
20190108963
2019-04-11

Silicon electron emitter designs

 #25
20180096829
2018-04-05

Multiband photocathode and associated detector

 #26
20180025881
2018-01-25

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

 #27
20160343532
2016-11-24

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

 #28
20150235799
2015-08-20

Versatile spin-polarized electron source

 #29
20150146865
2015-05-28

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

 #30
20120103825
2012-05-03

Anti-reflective nanoporous silicon for efficient hydrogen production

 #31
20110089397
2011-04-21

Spin-polarized electron source

 #32
20070132050
2007-06-14

Photoelectric surface and photodetector

 #33
20070096648
2007-05-03

Photocathode comprising a plurality of openings on an electron emission layer

 #34
20060081770
2006-04-20

Low-photon flux image-intensified electronic camera

 #35
18796351
2025-06-17

And manufacturing methods of SWIR I2TUBE via heterogeneous wafer integration

 #36
16449137
2020-08-04

Wafer scale image intensifier

 #37
15799796
2019-08-27

Tunable quantum confinement and quantum dot photocathode