H01J 2201/30411
Conical shaped
Official title: conical shaped, e.g. Spindt type
H01J2201/30411 (Conical shaped) appears on 33 US grants and 38 published applications in this corpus.
Search patents in H01J- Granted patents
- 33
- Published applications
- 38
- Assignees
- 24
- Inventors
- 88
- Latest grant
- 16 Jan 2024
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 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 2 | 2 |
| 2011 | 0 | 1 |
| 2012 | 3 | 1 |
| 2013 | 0 | 3 |
| 2014 | 1 | 4 |
| 2015 | 4 | 2 |
| 2016 | 3 | 4 |
| 2017 | 5 | 5 |
| 2018 | 4 | 1 |
| 2019 | 2 | 6 |
| 2020 | 6 | 2 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Passive and active diamond-based electron emitters and ionizers16 Jan 2024US 11,875,964 B2Physical Sciences, Inc.
- Diamond semiconductor device18 May 2021US 11,011,605 B2Evince Technology Limited
- Photocathode designs and methods of generating an electron beam using a photocathode13 Oct 2020US 10,804,069 B2KLA-Tencor Corporation
- Electron beam generation and measurement18 Aug 2020US 10,748,737 B2KLA-Tencor Corporation
- Metal protective layer for electron emitters with a diffusion barrier14 Jul 2020US 10,714,294 B2KLA-Tencor Corporation
- Backend field emission devices19 Mar 2026US 2026/0081089 A1
- Package having field emission element and x-ray device having the same28 Aug 2025US 2025/0275297 A1LG Electronics Inc.
- Passive and active diamond-based electron emitters and ionizers5 Jan 2023US 2023/0005694 A1Physical Sciences, Inc.
- Passive and active diamond-based electron emitters and ionizers3 Feb 2022US 2022/0037104 A1Physical Sciences, Inc.
- Photocathode designs and methods of generating an electron beam using a photocathode9 Apr 2020US 2020/0111637 A1KLA-Tencor Corporation
Most cited
By later US patents
- Field emission devices and methods of making thereof14US 9,711,392 B2Infineon Technologies AG · 2017
- Method for manufacturing a cathode tip of electric field emission device12US 6,069,018 AElectronics and Telecommunications Research Institute · 2000
- Atomically sharp iridium tip10US 7,737,414 B2Academia Sinica · 2010
- High pressure field emitter, photoionization, plasma initiation and field devices8US 8,312,704 B22012
- Electron source6US 10,133,181 B2KLA-Tencor Corporation · 2018