H01J 1/35
Electrodes exhibiting both secondary emission and photo-emission
H01J1/35 (Electrodes exhibiting both secondary emission and photo-emission) appears on 10 US grants and 11 published applications in this corpus.
Search patents in H01J- Granted patents
- 10
- Published applications
- 11
- Assignees
- 4
- Inventors
- 22
- Latest grant
- 8 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electron emitter structure, external photoelectric effect emitter, particle collecting device, tunnel surface emitter, semiconductor- based direct emitter and liquid ioniser comprising same, gas sensor comprising an emitter or emitter structure, method for generating free electrons, and method for collecting particles8 Apr 2025US 12,272,513 B2DBT GmbH
- Method of manufacturing and operating nano-scale energy conversion device8 Feb 2022US 11,244,816 B2Birmingham Technologies, Inc.
- Nano-scale energy conversion device16 Mar 2021US 10,950,706 B2Birmingham Technologies, Inc.
- Electron emission device and transistor provided with the same3 Oct 2017US 9,779,906 B2Kabushiki Kaisha Toyota Chuo Kenkyusho
- Photocathode, photomultiplier and electron tube16 Apr 2013US 8,421,354 B2Hamamatsu Photonics K.K.
- Electron emitter structure, external photoelectric effect emitter, particle collecting device, tunnel surface emitter, semiconductor-based direct emitter and liquid ioniser comprising same, gas sensor comprising an emitter or emitter structure, method for generating free electrons, and method for collecting particles8 Aug 2024US 2024/0266134 A1DBT GmbH
- Method of Manufacturing and Operating Nano-Scale Energy Conversion Device26 May 2022US 2022/0165555 A1Birmingham Technologies, Inc.
- Nano-Scale Energy Conversion Device27 Aug 2020US 2020/0273959 A1Birmingham Technologies, Inc.
- Method of Manufacturing and Operating Nano-Scale Energy Conversion Device27 Aug 2020US 2020/0274045 A1Birmingham Technologies, Inc.
- Electron emission device and transistor provided with the same24 Aug 2017US 2017/0243712 A1Kabushiki Kaisha Toyota Chuo Kenkyusho
Most cited
By later US patents
- Afterglow lamp with multiple phosphor coatings10US 6,479,936 B12002
- Method of manufacturing and operating nano-scale energy conversion device4US 11,244,816 B2Birmingham Technologies, Inc. · 2022
- Nano-scale energy conversion device3US 10,950,706 B2Birmingham Technologies, Inc. · 2021
- Cathode for emitting photoelectron or secondary electron, photomultiplier tube, and electron-multiplier tube3US 6,670,752 B2Hamamatsu Photonics K.K. · 2003
- Cathode for photoelectric emission, cathode for secondary electron emission, electron multiplier tube, and photomultiplier tube1US 5,463,272 AHamamatsu Photonics K.K. · 1995