H01J 23/06
Electron or ion guns
H01J23/06 (Electron or ion guns) appears on 170 US grants and 68 published applications in this corpus.
Search patents in H01J- Granted patents
- 170
- Published applications
- 68
- Assignees
- 91
- Inventors
- 284
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 8 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 4 |
| 2003 | 7 | 4 |
| 2004 | 3 | 3 |
| 2005 | 3 | 1 |
| 2006 | 3 | 7 |
| 2007 | 3 | 3 |
| 2008 | 6 | 4 |
| 2009 | 4 | 0 |
| 2010 | 1 | 3 |
| 2011 | 0 | 2 |
| 2012 | 2 | 2 |
| 2013 | 3 | 3 |
| 2014 | 3 | 1 |
| 2015 | 4 | 1 |
| 2016 | 3 | 3 |
| 2017 | 3 | 1 |
| 2018 | 3 | 3 |
| 2019 | 6 | 4 |
| 2020 | 2 | 0 |
| 2021 | 1 | 3 |
| 2022 | 1 | 3 |
| 2023 | 3 | 3 |
| 2024 | 4 | 3 |
| 2025 | 3 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Composite electron beam vacuum tube13 Jan 2026US 12,525,418 B2The Boeing Company
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices4 Nov 2025US 12,463,000 B2Elve Inc.
- Traveling wave tube14 Oct 2025US 12,444,566 B2Raytheon Company
- Multi-layer vacuum electron device and method of manufacture4 Feb 2025US 12,217,926 B2Elve Inc.
- Electron gun21 May 2024US 11,990,307 B2Thales Deutschland GmbH Electron Devices
- Electromagnetic radiation generation2 Jul 2026US 2026/0188529 A1United Kingdom Atomic Energy Authority
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices5 Feb 2026US 2026/0038760 A1Elve Inc.
- Multi-layer vacuum electron device and method of manufacture5 Jun 2025US 2025/0182994 A1Elve Inc.
- Electron gun and vacuum electronic device20 Mar 2025US 2025/0095945 A1
- Travelling-Wave Tube, Electron Gun, and Power Amplification System27 Feb 2025US 2025/0070736 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Article comprising enhanced nanotube emitter structure and process for fabricating article220US 6,250,984 B1Agere Systems Guardian Corp. · 2001
- Microwave vacuum tube device employing grid-modulated cold cathode source having nanotube emitters76US 6,297,592 B1Lucent Technologies Inc. · 2001
- Field emission devices employing diamond particle emitters37US 5,977,697 ALucent Technologies Inc. · 1999
- Particle beam accelerators35US 4,570,103 A1986
- Selectively shaped field emission electron beam source, and phosphor array for use therewith33US 5,583,393 AFED Corporation · 1996