H01J 19/00
Details of vacuum tubes of the types covered by group h01j21/00
Official title: Details of vacuum tubes of the types covered by group H01J21/00
H01J19/00 (Details of vacuum tubes of the types covered by group h01j21/00) appears on 248 US grants and 171 published applications in this corpus.
Search patents in H01J- Granted patents
- 248
- Published applications
- 171
- Assignees
- 137
- Inventors
- 437
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 3 |
| 2004 | 0 | 3 |
| 2005 | 1 | 3 |
| 2006 | 4 | 5 |
| 2007 | 2 | 0 |
| 2008 | 3 | 2 |
| 2009 | 2 | 4 |
| 2010 | 1 | 0 |
| 2011 | 2 | 2 |
| 2012 | 3 | 5 |
| 2013 | 3 | 12 |
| 2014 | 8 | 15 |
| 2015 | 16 | 18 |
| 2016 | 17 | 16 |
| 2017 | 22 | 16 |
| 2018 | 12 | 14 |
| 2019 | 17 | 19 |
| 2020 | 28 | 10 |
| 2021 | 12 | 9 |
| 2022 | 3 | 3 |
| 2023 | 5 | 6 |
| 2024 | 9 | 4 |
| 2025 | 1 | 1 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01J 19/02Electron-emitting electrodes120
- H01J 19/28Non-electron-emitting electrodes75
- H01J 19/42Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies58
- H01J 19/54Vessels29
- H01J 19/78One or more circuit elements structurally associated with the tube22
- H01J 19/70Means for obtaining or maintaining the vacuum9
- H01J 19/82Circuit arrangements not adapted to a particular application of the tube and8
- H01J 19/74Cooling arrangements6
All 15 subgroupsShow fewer
- H01J 19/66Means forming part of the tube for the purpose of providing electrical5
- H01J 19/58Seals between parts of vessels4
- H01J 19/60Seals for leading-in conductors1
- H01J 19/62Leading-in conductors1
- H01J 19/64Means forming part of the tube for the purpose supporting it1
- H01J 19/68Specified gas introduced into the tube at low pressure1
- H01J 19/76Means structurally associated with the tube for indicating defects or previous use0
Recent patents
- Modular getters and getters with different materials in vacuum enclosures31 Mar 2026US 12,592,354 B2Varex Imaging Corporation
- Processing systems, chambers, and related methods including turbines for energy harnessing27 Jan 2026US 12,534,821 B2APPLIED Materials.Inc.
- Composite electron beam vacuum tube13 Jan 2026US 12,525,418 B2The Boeing Company
- Method for amplifying electromagnetic waves with wirebonded triode23 Dec 2025US 12,505,971 B2
- Vacuum tube for amplifier circuit, and amplifier circuit using same19 Nov 2024US 12,149,214 B2Hamamatsu Photonics K.K.
- Systems and methods for creating an electron coil magnet2 Jan 2025US 2025/0006425 A1Vacon Oy
- Processing systems, chambers, and related methods including turbines for energy harnessing19 Sep 2024US 2024/0309548 A1APPLIED Materials.Inc.
- Composite Electron Beam Vacuum Tube19 Sep 2024US 2024/0312754 A1The Boeing Company
- Modular getters and getters with different materials in vacuum enclosures29 Aug 2024US 2024/0290569 A1Varex Imaging Corporation
- Method for amplifying electromagnetic waves with wirebonded triode16 May 2024US 2024/0161995 A1
Most cited
By later US patents
- Radial waveguide systems and methods for post-match control of microwaves157US 9,299,537 B2APPLIED Materials.Inc. · 2016
- Radial waveguide systems and methods for post-match control of microwaves129US 9,564,296 B2APPLIED Materials.Inc. · 2017
- Radial waveguide systems and methods for post-match control of microwaves111US 9,837,249 B2APPLIED Materials.Inc. · 2017
- Doped diamond for vacuum diode heat pumps and vacuum diode thermionic generators37US 6,214,651 B1Borealis Technical Limited · 2001
- Doped diamond for vacuum diode heat pumps and vacuum diode thermionic generators35US 5,981,071 ABorealis Technical Limited · 1999