H01J 2203/0228
Curved/extending upwardly
H01J2203/0228 (Curved/extending upwardly) appears on 6 US grants and 5 published applications in this corpus.
Search patents in H01J- Granted patents
- 6
- Published applications
- 5
- Assignees
- 5
- Inventors
- 15
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Energy tuner for a gated field emission cathode device, and associated method4 Nov 2025US 12,463,002 B2NCX Corporation
- Field emission cathode device and method of forming a field emission cathode device23 Apr 2024US 11,967,479 B2NCX Corporation
- Field emission device5 May 2015US 9,024,544 B2National University Corporation Sizuoka University
- Cathode planes for field emission devices13 Sep 2011US 8,016,630 B2Tatung Co., Ltd.
- Field emission array having carbon microstructure and method of manufacturing the same13 Sep 2011US 8,017,413 B2Korea Advanced Institute of Science and Technology
- Energy tuner for a gated field emission cathode device, and associated method11 Jul 2024US 2024/0234075 A1NCX Corporation
- Field emission cathode device and method of forming a field emission cathode device7 Mar 2024US 2024/0079196 A1NCX Corporation
- Field emission device13 Sep 2012US 2012/0229051 A1National University Corporation Sizuoka University
- Field emission array having carbon microstructure and method of manufacturing the same21 Apr 2011US 2011/0089396 A1Korea Advanced Institute of Science and Technology
- Cathode planes for field emission devices4 Jun 2009US 2009/0140629 A1Tatung Co., Ltd.
Most cited
By later US patents
No patent in this class has been cited by a later US patent yet.