H01J 29/62
Electrostatic lenses
H01J29/62 (Electrostatic lenses) appears on 174 US grants and 37 published applications in this corpus.
Search patents in H01J- Granted patents
- 174
- Published applications
- 37
- Assignees
- 55
- Inventors
- 246
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 11 | 0 |
| 1982 | 6 | 0 |
| 1983 | 11 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 11 | 0 |
| 1992 | 0 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 3 |
| 2003 | 5 | 3 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 5 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 2 | 3 |
| 2016 | 0 | 0 |
| 2017 | 2 | 1 |
| 2018 | 1 | 3 |
| 2019 | 2 | 1 |
| 2020 | 3 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 3 | 2 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices4 Nov 2025US 12,463,000 B2Elve Inc.
- Multi-layer vacuum electron device and method of manufacture4 Feb 2025US 12,217,926 B2Elve Inc.
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices16 Apr 2024US 11,961,693 B2Elve Inc.
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices27 Feb 2024US 11,915,900 B2Elve Inc.
- Multi-layer vacuum electron device and method of manufacture6 Feb 2024US 11,894,208 B2Elve Inc.
- Streak tube23 Jul 2026US 2026/0213112 A1Hamamatsu Photonics K.K.
- 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.
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices1 Aug 2024US 2024/0258061 A1Elve Inc.
- Multi-layer vacuum electron device and method of manufacture18 Jul 2024US 2024/0242916 A1Elve Inc.
Most cited
By later US patents
- Color picture tube having an improved inline electron gun with an expanded focus lens38US 4,370,592 ARCA Corporation · 1983
- Electron gun for a color cathode ray tube32US 5,300,855 ASamsung Electron Devices Co., Ltd. · 1994
- Electron gun system with dynamic convergence control29US 5,027,043 AZenith Electronics Corporation · 1991
- Electron gun having an extended field electrostatic focus lens27US 3,995,194 AZenith Radio Corporation · 1976
- Electron gun for a cathode ray tube26US 5,773,925 ASony Corporation · 1998