H01J 37/077
Electron guns using discharge in gases or vapours as electron sources
H01J37/077 (Electron guns using discharge in gases or vapours as electron sources) appears on 42 US grants and 41 published applications in this corpus.
Search patents in H01J- Granted patents
- 42
- Published applications
- 41
- Assignees
- 35
- Inventors
- 120
- Latest grant
- 19 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 4 |
| 2006 | 3 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 2 | 4 |
| 2010 | 0 | 1 |
| 2011 | 3 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 4 |
| 2014 | 4 | 2 |
| 2015 | 2 | 4 |
| 2016 | 3 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 3 |
| 2023 | 0 | 2 |
| 2024 | 3 | 2 |
| 2025 | 0 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Large-area uniform electron source137US 5,003,178 AElectron Vision Corporation · 1991
- Broad-beam electron source70US 4,684,848 AKaufman & Robinson, Inc. · 1987
- Focused electron and ion beam systems65US 6,768,120 B2The Regents of the University of California · 2004
- Electron beam excited plasma system60US 5,397,956 ATokyo Electron Limited · 1995
- Method and apparatus for generating electron beams53US 9,064,671 B2Arcam AB · 2015