H01J 43/02
Tubes in which one or a few electrodes are secondary-electron emitting electrodes
H01J43/02 (Tubes in which one or a few electrodes are secondary-electron emitting electrodes) appears on 43 US grants and 30 published applications in this corpus.
Search patents in H01J- Granted patents
- 43
- Published applications
- 30
- Assignees
- 30
- Inventors
- 85
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 3 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 3 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 3 |
| 2014 | 2 | 4 |
| 2015 | 2 | 2 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 2 | 0 |
| 2019 | 2 | 3 |
| 2020 | 1 | 0 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 2 | 4 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ultra-microlight transmission device using secondary electrons13 Jan 2026US 12,523,354 B2Biolight Corp
- Metasurface element, electron tube, and method for producing electron tube26 Aug 2025US 12,400,821 B2Hamamatsu Photonics K.K.
- Microchannel plate and method of making the microchannel plate with metal contacts selectively formed on one side of channel openings14 Jan 2025US 12,198,916 B2Elbit Systems of America, LLC
- Microchannel plate and method of making the microchannel plate with metal contacts selectively formed on one side of channel openings2 Apr 2024US 11,948,786 B2Elbit Systems of America, LLC
- Detector comprising transmission secondary electron emission means9 Jan 2024US 11,869,757 B2Adaptas Solutions Pty Ltd
- Ultra-microlight transmission device using secondary electrons27 Feb 2025US 2025/0067416 A1Biolight Corp
- Ion detectors19 Dec 2024US 2024/0420938 A1Micromass UK Limited
- Electron Multiplier Having Improved Voltage Stabilisation1 Aug 2024US 2024/0258089 A1
- Microchannel plate and method of making the microchannel plate with metal contacts selectively formed on one side of channel openings6 Jun 2024US 2024/0186129 A1Elbit Systems of America, LLC
- Metasurface element, electron tube, and method for producing electron tube18 Jan 2024US 2024/0021398 A1Hamamatsu Photonics K.K.
Most cited
By later US patents
- Apparatus for detecting negative ions25US 4,423,324 AFinnigan Corporation · 1983
- Ion detector for measuring ion output14US 10,073,055 B2Global Plasma Solutions, Inc. · 2018
- Reduction of hysteresis in photomultiplier detectors11US 4,367,404 ABeckman Instruments, Inc. · 1983
- Radiation detector11US 4,564,753 AU. S. Philips Corporation · 1986
- Method and system for gating a power supply in a radiation detector11US 6,690,098 B1Litton Systems, Inc. · 2004