H01J19/38 - CPC Classification Index

ClassID:

204812 ⎘

H01J19/38 - CPC Classification

Classification description:

Details of vacuum tubes of the types covered by group; Non-electron-emitting electrodes; Screens Control electrodes, e.g. grid

Recent Application in this class:

20210159039

2021-05-27

Device for controlling electron flow and method for manufacturing said device

20200388460

2020-12-10

Device for controlling electron flow and method for manufacturing said device

20200075286

2020-03-05

Suspended grid structures for electrodes in vacuum electronics

20190341216

2019-11-07

Suspended grid structures for electrodes in vacuum electronics

20190252146

2019-08-15

Planar field emission transistor

20190027334

2019-01-24

Suspended grid structures for electrodes in vacuum electronics

20180294133

2018-10-11

Devices and methods for enhancing the collection of electrons

20180190466

2018-07-05

Electron emission source and X-ray generator using the same

20170296844

2017-10-19

Beam position monitors for medical radiation machines

#10

20170294284

2017-10-12

Semiconductor device and related manufacturing method

#11

20170148605

2017-05-25

Electron emitter source

#12

20170103867

2017-04-13

Vacuum tube

#13

20170084417

2017-03-23

Electron emitting device using graphene and method for manufacturing same

#14

20160211107

2016-07-21

Vacuum tube

#15

20160211106

2016-07-21

Vacuum tube

#16

20160148776

2016-05-26

Field emission device with ground electrode

#17

20160013009

2016-01-14

Variable field emission device

#18

20150279607

2015-10-01

Semiconductor device and related manufacturing method

#19

20150270089

2015-09-24

Printed active device with a 3D thermionic electronic component

#20

20150255239

2015-09-10

Nano granular materials (NGM) material, methods and arrangements for manufacturing said material and electrical components comprising said material

#21

20150247255

2015-09-03

Electrochemical polishing solution, process for electrochemically polishing graphite gate electrode and graphite gate electrode

#22

20150243468

2015-08-27

Applications of graphene grids in vacuum electronics

#23

20150213992

2015-07-30

Electronic device multi-layer graphene grid

#24

20150022076

2015-01-22

Electron-emitting cold cathode device

#25

20140333213

2014-11-13

Field emission device with AC output

#26

20140159590

2014-06-12

Materials and configurations of a field emission device

#27

20140091716

2014-04-03

Field emission device

#28

20130293090

2013-11-07

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

#29

20130241434

2013-09-19

Dielectric-free triode field emission display device based on double-gate/single-cathode type electron emission units and the device drive methods

#30

20130229105

2013-09-05

Variable field emission device

#31

20130169156

2013-07-04

Field emission device

#32

20130168635

2013-07-04

Materials and configurations of a field emission device

#33

20090115305

2009-05-07

Triodes using nanofabric articles and methods of making the same

#34

20060125368

2006-06-15

Solid state vacuum devices

#35

16661173

2020-07-21

Field emission neutralizer comprising a graphitized carbon nanotube structure

#36

15496142

2019-11-26

Multi-beam power grid tube for high power and high frequency operation