H01J 1/32
Secondary-electron-emitting electrodes
Official title: Secondary-electron-emitting electrodes (H01J1/35 takes precedence)
H01J1/32 (Secondary-electron-emitting electrodes) appears on 68 US grants and 50 published applications in this corpus.
Search patents in H01J- Granted patents
- 68
- Published applications
- 50
- Assignees
- 35
- Inventors
- 162
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 3 | 9 |
| 2005 | 1 | 6 |
| 2006 | 3 | 7 |
| 2007 | 5 | 3 |
| 2008 | 2 | 2 |
| 2009 | 3 | 1 |
| 2010 | 1 | 0 |
| 2011 | 2 | 4 |
| 2012 | 1 | 1 |
| 2013 | 1 | 3 |
| 2014 | 1 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 4 | 5 |
| 2020 | 3 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 1 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Metasurface element, electron tube, and method for producing electron tube26 Aug 2025US 12,400,821 B2Hamamatsu Photonics K.K.
- Microchannel sensor and method of manufacturing the same13 May 2025US 12,298,448 B2Universität Hamburg
- Reflection mode dynode14 Jan 2025US 12,198,915 B2Adaptas Solutions Pty Ltd
- Electron multipliers having improved gain stability2 Apr 2024US 11,948,785 B2Adaptas Solutions Pty Ltd
- Method of enhancing a DLC coated surface for enhanced multipaction resistance23 Nov 2021US 11,183,390 B2Nokomis, Inc.
- Metasurface element, electron tube, and method for producing electron tube18 Jan 2024US 2024/0021398 A1Hamamatsu Photonics K.K.
- Electron multipliers having improved gain stability21 Sep 2023US 2023/0298873 A1Adaptas Solutions Pty Ltd
- Microchannel sensor and method of manufacturing the same18 May 2023US 2023/0152473 A1Universität Hamburg
- Improved reflection mode dynode14 Jul 2022US 2022/0223393 A1Adaptas Solutions Pty Ltd
- Electron multiplier production method and electron multiplier20 Feb 2020US 2020/0058477 A1Hamamatsu Photonics K.K.
Most cited
By later US patents
- Electron emitter and method of producing the same31US 7,307,383 B2NGK Insulators, Ltd. · 2007
- Compact low-noise dynodes incorporating semiconductor secondary electron emitting materials29US 5,680,008 AAdvanced Technology Materials, Inc. · 1997
- Secondary electron amplification structure employing carbon nanotube, and plasma display panel and back light using the same21US 6,346,775 B1Samsung SDI.Co., Ltd. · 2002
- Secondary-emissive layers17US 4,099,079 AU. S. Philips Corporation · 1978
- Continuous channel electron beam multiplier13US 4,073,989 AHorizons Incorporated · 1978