ClassID:

204806

H01J19/24 - CPC Classification

Classification description:

Details of vacuum tubes of the types covered by group; Electron-emitting electrodes; Cathodes Cold cathodes, e.g. field-emissive cathode

Recent Application in this class:
#1
20230197395
2023-06-22

Field emission device, field emission method and positioning and fixing method

#2
20220328275
2022-10-13

Power device and fabrication method thereof

#3
20220005707
2022-01-06

Shaping nanomaterials by short electrical pulses

#4
20200402757
2020-12-24

Image intensifier with thin layer transmission layer support structures

#5
20200350136
2020-11-05

Vertical vacuum channel transistor

#6
20200111868
2020-04-09

Two-dimensional semiconductor with geometry structure and generating method thereof

#7
20200111637
2020-04-09

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

#8
20190378675
2019-12-12

Vertical vacuum channel transistor with minimized air gap between tip and gate

#9
20190304733
2019-10-03

Fold over emitter and collector field emission transistor

#10
20190304731
2019-10-03

Electron emission source and method for fabricating the same

#11
20190287786
2019-09-19

Field emission light source adapted to emit UV light

#12
20190252146
2019-08-15

Planar field emission transistor

#13
20190108967
2019-04-11

Electron beam generation and measurement

#14
20190108966
2019-04-11

Ruthenium encapsulated photocathode electron emitter

#15
20190108964
2019-04-11

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

#16
20190108963
2019-04-11

Silicon electron emitter designs

#17
20180277329
2018-09-27

Nanoscale field-emission device and method of fabrication

#18
20180211806
2018-07-26

Electron emission source and method for fabricating the same

#19
20180108508
2018-04-19

Fold over emitter and collector field emission transistor

#20
20180040449
2018-02-08

Microstructured surface with low work function

#21
20180005792
2018-01-04

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

#22
20180005791
2018-01-04

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

#23
20170250048
2017-08-31

Nanoscale field-emission device and method of fabrication

#24
20170221667
2017-08-03

Microstructured surface with low work function

#25
20170156197
2017-06-01

X-ray generation from a super-critical field

#26
20170084417
2017-03-23

Electron emitting device using graphene and method for manufacturing same

#27
20160307723
2016-10-20

Fold over emitter and collector field emission transistor

#28
20160196948
2016-07-07

LOW VOLTAGE NANOSCALE VACUUM ELECTRONIC DEVICES

#29
20160148776
2016-05-26

Field emission device with ground electrode

#30
20160148774
2016-05-26

Field-emission device with improved beams-convergence

#31
20160141428
2016-05-19

Process for manufacturing a semiconductor device comprising an empty trench structure and semiconductor device manufactured thereby

#32
20160020084
2016-01-21

Shaped cathode for a field emission arrangement

#33
20160013006
2016-01-14

Field emission cathode and field emission device

#34
20150371806
2015-12-24

Electromechanical x-ray generator

#35
20150213992
2015-07-30

Electronic device multi-layer graphene grid

#36
20150187531
2015-07-02

High voltage high current vacuum integrated circuit

#37
20150035428
2015-02-05

Nanostructure field emission cathode structure and method for making

#38
20150022076
2015-01-22

Electron-emitting cold cathode device

#39
20140270087
2014-09-18

X-ray generator including heat sink block

#40
20140191650
2014-07-10

Electric field emitting source, element using same, and production method therefor

#41
20140027655
2014-01-30

Peptide nanostructures and methods of generating and using the same

#42
20140010347
2014-01-09

Mesh electrode adhesion structure, electron emission device and electronic apparatus including the electron emission device

#43
20130293090
2013-11-07

Field emission device having entangled carbon nanotubes between a carbon nanotube layer and carbon nanotube array

#44
20130241389
2013-09-19

VACUUM FIELD EMISSION DEVICES AND METHODS OF MAKING SAME

#45
20120081097
2012-04-05

High voltage high current regulator

#46
20120063276
2012-03-15

Peptide nanostructures and methods of generating and using the same

#47
20090123553
2009-05-14

Peptide nanostructures and methods of generating and using the same

#48
20060079454
2006-04-13

Peptide nanostructures and methods of generating and using the same

#49
20060060835
2006-03-23

Method for increasing efficiency of thermotunnel devices

#50
20060044036
2006-03-02

Logical operation element field emission emitter and logical operation circuit

#51
20050247929
2005-11-10

Nanotube-based vacuum devices

#52
20050161668
2005-07-28

Nanotube-based vacuum devices

#53
17846498
2023-05-16

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

#54
16899788
2020-12-29

Electron emission source for metal-insulator-semiconductor-metal having higher kinetic energy for improved electron emission and method for making the same

#55
16661173
2020-07-21

Field emission neutralizer comprising a graphitized carbon nanotube structure

#56
16540318
2020-03-03

Single walled carbon nanotube triode and methods of using same

#57
16005204
2019-07-09

Vertical vacuum channel transistor with minimized air gap between tip and gate

#58
14684762
2016-08-30

Fold over emitter and collector field emission transistor