H01J 1/316
Having an electric field parallel to the surface
Official title: having an electric field parallel to the surface, e.g. thin film cathodes
H01J1/316 (Having an electric field parallel to the surface) appears on 254 US grants and 168 published applications in this corpus.
Search patents in H01J- Granted patents
- 254
- Published applications
- 168
- Assignees
- 34
- Inventors
- 242
- Latest grant
- 13 Aug 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 12 | 0 |
| 1998 | 10 | 0 |
| 1999 | 10 | 0 |
| 2000 | 15 | 0 |
| 2001 | 17 | 4 |
| 2002 | 22 | 20 |
| 2003 | 21 | 20 |
| 2004 | 14 | 13 |
| 2005 | 18 | 28 |
| 2006 | 10 | 12 |
| 2007 | 13 | 9 |
| 2008 | 12 | 13 |
| 2009 | 11 | 21 |
| 2010 | 15 | 12 |
| 2011 | 16 | 6 |
| 2012 | 6 | 2 |
| 2013 | 5 | 2 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 3 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Electron-emitting device with electron-emitting region insulated from electrodes270US 5,066,883 ACanon Kabushiki Kaisha · 1991
- Electron-emitting device, electron source and image-forming apparatus99US 6,184,610 B2Canon Kabushiki Kaisha · 2001
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- Electron-emitting device and electron-beam generator making use82US 4,954,744 ACanon Kabushiki Kaisha · 1990
- Electron-emitting device as well as electron source and image-forming apparatus using such devices76US 5,986,389 ACanon Kabushiki Kaisha · 1999