H01J 1/146
With metals or alloys as an emissive material
Official title: with metals or alloys as an emissive material
H01J1/146 (With metals or alloys as an emissive material) appears on 25 US grants and 25 published applications in this corpus.
Search patents in H01J- Granted patents
- 25
- Published applications
- 25
- Assignees
- 23
- Inventors
- 98
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 2 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 4 | 1 |
| 2017 | 0 | 2 |
| 2018 | 2 | 0 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 3 |
| 2023 | 1 | 0 |
| 2024 | 3 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cathode member for electron beam generation, and method for manufacturing the same7 Oct 2025US 12,437,953 B2Kobelco Research Institute, Inc.
- Method and apparatus for reducing the work function of polycrystalline metal hexaboride25 Feb 2025US 12,237,137 B2California Institute of Technology
- Pincer mount cathode2 Jul 2024US 12,027,340 B2Kimball Physics, Inc.
- Electron source, method for manufacturing same, and device provided with electron source18 Jun 2024US 12,014,894 B2Denka Company Limited
- Electron source, method for manufacturing same, and device provided with electron source14 May 2024US 11,984,291 B2Denka Company Limited
- Sintered material, method for producing same, and electron source and device provided with same13 Aug 2026US 2026/0233304 A1
- Pincer Mount Cathode16 May 2024US 2024/0161994 A1Kimball Physics, Inc.
- Electron source, method for manufacturing same, and device provided with electron source25 Jan 2024US 2024/0029989 A1Denka Company Limited
- Cathode member for electron beam generation, and method for manufacturing the same20 Oct 2022US 2022/0336179 A1Kobelco Research Institute, Inc.
- Method and apparatus for reducing the work function of polycrystalline metal hexaboride13 Oct 2022US 2022/0328274 A1California Institute of Technology
Most cited
By later US patents
- Thermionic tungsten/scandate cathodes and methods of making the same8US 10,497,530 B2The Government of the United States of America, as represented by the Secretary of the Navy · 2019
- Method of fabricating tungsten scandate nano-composite powder for cathodes6US 10,714,292 B2The Regents of the University of California · 2020
- Image display apparatus and method for fabricating the same6US 5,730,637 AMatsushita Electric Industrial Co., Ltd. · 1998
- Thermal-field type electron source composed of transition metal carbide material with artificial facet6US 9,240,301 B1Applied Physics Technologies, Inc. · 2016
- Method for manufacturing a glow cathode for an electron tube5US 5,580,291 ASiemens Aktiengesellschaft · 1996