ClassID:

205860

H01J2209/0223 - CPC Classification

Classification description:

Apparatus and processes for manufacture of discharge tubes; Manufacture of cathodes; Cold cathodes Field emission cathodes

Sub-classes:
Recent Application in this class:
#1
20260058086
2026-02-26

CARBON NANOTUBE BASED COLD CATHODES FOR X-RAY GENERATION

#2
20250357069
2025-11-20

JUNCTION BETWEEN HEXABORIDE-CONTAINING AND TANTALUM-CONTAINING COMPONENTS

#3
20240062984
2024-02-22

CARBON NANOTUBE BASED COLD CATHODES FOR X-RAY GENERATION

#4
20220189725
2022-06-16

Electron emitter and method of fabricating same

#5
20210142975
2021-05-13

Electron emitter and method of fabricating same

#6
20200388458
2020-12-10

Emitter, electron gun in which same is used, electronic device in which same is used, and method for manufacturing same

#7
20190172674
2019-06-06

Electron emitter and method of fabricating same

#8
20180277329
2018-09-27

Nanoscale field-emission device and method of fabrication

#9
20180040451
2018-02-08

Array substrate, display panel and display apparatus having the same, and fabricating method thereof

#10
20180040449
2018-02-08

Microstructured surface with low work function

#11
20180019091
2018-01-18

Emitter, electron gun using emitter, electronic apparatus using electron gun, and method of producing emitter

#12
20180005792
2018-01-04

Method for manufacturing a trench channel for vacuum transistor device and vacuum transistor device

#13
20180005791
2018-01-04

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

#14
20170250048
2017-08-31

Nanoscale field-emission device and method of fabrication

#15
20170221667
2017-08-03

Microstructured surface with low work function

#16
20170140893
2017-05-18

Array substrate, display panel and display apparatus having the same, and fabricating method thereof

#17
20170117112
2017-04-27

Nanoparticle-templated lithographic patterning of nanoscale electronic components

#18
20160181051
2016-06-23

Nanoparticle-templated lithographic patterning of nanoscale electronic components

#19
20110104832
2011-05-05

Method for producing a field-emitter array with controlled apex sharpness

#20
20110018427
2011-01-27

Field emission display

#21
20080206448
2008-08-28

Low Work Function Material

#22
20080107892
2008-05-08

Method for synthesizing nanoscale structures in defined locations

#23
20070252505
2007-11-01

Composition for electron emission source, electron emission source formed from the composition and electron emission device including the electron emission source

#24
20070148991
2007-06-28

Method of fabricating nanodevices

#25
20060193972
2006-08-31

Low work function material

#26
20060079012
2006-04-13

Method of manufacturing carbon nanotube field emission device

#27
20060076504
2006-04-13

Electron source, and charged-particle apparatus comprising such an electron source

#28
20060001350
2006-01-05

Field emission electron gun and electron beam apparatus using the same

#29
20050260453
2005-11-24

Method for synthesizing nanoscale structures in defined locations

#30
20050001528
2005-01-06

Enhanced field emission from carbon nanotubes mixed with particles

#31
18665386
2025-08-12

Electrode and filament coupled by adapter

#32
15359436
2018-09-25

Thermionic-enhanced field emission electron source composed of transition metal carbide material with sharp emitter end-form