H01J 9/027
Of thin film cathodes
Official title: {of thin film cathodes}
H01J9/027 (Of thin film cathodes) appears on 258 US grants and 174 published applications in this corpus.
Search patents in H01J- Granted patents
- 258
- Published applications
- 174
- Assignees
- 39
- Inventors
- 227
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 14 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 17 | 0 |
| 2001 | 20 | 6 |
| 2002 | 20 | 27 |
| 2003 | 23 | 29 |
| 2004 | 24 | 23 |
| 2005 | 27 | 28 |
| 2006 | 20 | 20 |
| 2007 | 11 | 8 |
| 2008 | 17 | 4 |
| 2009 | 11 | 12 |
| 2010 | 9 | 1 |
| 2011 | 9 | 4 |
| 2012 | 4 | 1 |
| 2013 | 3 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 5 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Electron emitting element and method for manufacturing same30 Jan 2024US 11,887,802 B2National Institute of Advanced Industrial Science and Technology
- Methods of manufacturing plasma generating cells for a plasma source16 Jul 2026US 2026/0202227 A1APPLIED Materials.Inc.
- Packaging for a sensor and methods of manufacturing thereof5 Feb 2026US 2026/0036454 A1APPLIED Materials.Inc.
- Field emitter and method for manufacturing same15 Jan 2026US 2026/0018362 A1Suzhou Institute of Nano-Tech and Nano-Bionics (Sinano) , Chinese Academy of Sciences
- Packaging for a sensor and methods of manufacturing thereof5 Oct 2023US 2023/0313376 A1APPLIED Materials.Inc.
- Packaging for a sensor and methods of manufacturing thereof5 Oct 2023US 2023/0314193 A1APPLIED Materials.Inc.
Most cited
By later US patents
- Electron-emitting device with electron-emitting region insulated from electrodes270US 5,066,883 ACanon Kabushiki Kaisha · 1991
- Diode structure flat panel display100US 5,449,970 AMicroelectronics and Computer Technology Corporation · 1995
- Electron-emitting device, electron source and image-forming apparatus99US 6,184,610 B2Canon Kabushiki Kaisha · 2001
- Electron-emitting device, electron source and image-forming apparatus as well as method of manufacturing the same94US 6,246,168 B1Canon Kabushiki Kaisha · 2001
- Method of manufacturing electron-emitting device, electron source and image-forming apparatus91US 5,622,634 ACanon Kabushiki Kaisha · 1997