H01J 2201/02
Arrangements for eliminating deleterious effects
H01J2201/02 (Arrangements for eliminating deleterious effects) appears on 24 US grants and 9 published applications in this corpus.
Search patents in H01J- Granted patents
- 24
- Published applications
- 9
- Assignees
- 19
- Inventors
- 62
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 2 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mounted planar filament31 Mar 2026US 12,592,355 B2Moxtek, Inc.
- Laminate, electron source and electronic device containing laminate, and production method and cleaning method for laminate25 Feb 2025US 12,237,141 B2National Institute for Materials Science
- Electron emitting element and method for manufacturing same30 Jan 2024US 11,887,802 B2National Institute of Advanced Industrial Science and Technology
- Electron gun and manufacturing method therefor6 Sep 2022US 11,437,214 B2New Japan Radio Co., Ltd.
- Thermionic cathode with a graphene sealing layer and method of making the same9 Jun 2020US 10,679,816 B1Triad National Security, LLC
- Mounted planar filament6 Mar 2025US 2025/0079108 A1Moxtek, Inc.
- Laminate, electron source and electronic device containing laminate, and production method and cleaning method for laminate28 Nov 2024US 2024/0395494 A1National Institute for Materials Science
- Electron gun, electron ray applying device, and electron beam projecting method20 Jul 2023US 2023/0230794 A1Photo electron Soul Inc.
- Electron emitting element and method for manufacturing same4 May 2023US 2023/0134647 A1National Institute of Advanced Industrial Science and Technology
- Electron gun and manufacturing method therefor29 Apr 2021US 2021/0125805 A1New Japan Radio Co., Ltd.
Most cited
By later US patents
- Protected substrate structure for a field emission display device198US 6,853,129 B1Candescent Intellectual Property Services, Inc. · 2005
- Electron generation using a fluorescent element and image forming using such electron generation38US 5,905,335 ACanon Kabushiki Kaisha · 1999
- Method for forming a multi-level conductive black matrix for a flat panel display24US 6,030,269 ACandescent Technologies Corporation · 2000
- Spacer locator design for three-dimensional focusing structures in a flat panel display23US 5,859,502 ACandescent Technologies Corporation · 1999
- Support structure for flat panel displays20US 5,939,822 ASemix Incorporated · 1999