H01J 31/04
With only one or two output electrodes with only two electrically independant
Official title: with only one or two output electrodes {with only two electrically independant groups or electrodes}
H01J31/04 (With only one or two output electrodes with only two electrically independant) appears on 6 US grants and 8 published applications in this corpus.
Search patents in H01J- Granted patents
- 6
- Published applications
- 8
- Assignees
- 8
- Inventors
- 11
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Extreme-ultraviolet light source device using electron beams21 Oct 2025US 12,451,316 B2Worldbeam Solution Co., Ltd.
- Electron gun, electron beam applicator, method for releasing electrons using electron gun, and method for adjusting focal position of electron beam7 Dec 2021US 11,195,685 B2Photo electron Soul Inc.
- Floating grid electron source24 Nov 2015US 9,196,449 B1FAR-TECH, Inc.
- Non-radioactive ion source using high energy electrons14 Apr 2015US 9,006,678 B2Implant Sciences Corporation
- Sterilization of an object using low energy electron beam13 Aug 2026US 2026/0232852 A1Pharmalab India Pvt. Ltd.
- Sterilization of an object using low energy electron beam13 Aug 2026US 2026/0232853 A1Pharmalab India Pvt. Ltd.
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- Extreme-ultraviolet light source device using electron beams20 Apr 2023US 2023/0122253 A1University-Industry Cooperation Group of Kyung Hee University
Most cited
By later US patents
- Non-radioactive ion source using high energy electrons9US 9,006,678 B2Implant Sciences Corporation · 2015
- Floating grid electron source3US 9,196,449 B1FAR-TECH, Inc. · 2015
- Electron gun, electron beam applicator, method for releasing electrons using electron gun, and method for adjusting focal position of electron beam2US 11,195,685 B2Photo electron Soul Inc. · 2021
- Electron bombarded semiconductor device1US 4,045,705 AWatkins-Johnson Company · 1977