H01J 2235/06
Cathode assembly
H01J2235/06 (Cathode assembly) appears on 428 US grants and 463 published applications in this corpus.
Search patents in H01J- Granted patents
- 428
- Published applications
- 463
- Assignees
- 196
- Inventors
- 822
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 4 |
| 2003 | 2 | 3 |
| 2004 | 2 | 6 |
| 2005 | 4 | 12 |
| 2006 | 11 | 13 |
| 2007 | 9 | 19 |
| 2008 | 12 | 16 |
| 2009 | 13 | 26 |
| 2010 | 22 | 49 |
| 2011 | 24 | 42 |
| 2012 | 28 | 25 |
| 2013 | 23 | 21 |
| 2014 | 16 | 19 |
| 2015 | 23 | 26 |
| 2016 | 27 | 15 |
| 2017 | 22 | 14 |
| 2018 | 8 | 14 |
| 2019 | 12 | 16 |
| 2020 | 27 | 22 |
| 2021 | 15 | 18 |
| 2022 | 20 | 16 |
| 2023 | 15 | 20 |
| 2024 | 16 | 15 |
| 2025 | 16 | 21 |
| 2026 | 16 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and arrangement for an X-ray source29 Sep 2026US 12,750,938 B2Excillum AB
- X-ray tube22 Sep 2026US 12,744,177 B2Hamamatsu Photonics K.K.
- Irradiation apparatus18 Aug 2026US 12,708,685 B2Precision X-Ray, Inc.
- Emitter and field emission assembly including the same7 Jul 2026US 12,676,276 B2AweXome Ray, Inc.
- Flat emitter with compliant supported end16 Jun 2026US 12,653,467 B2GE Precision Healthcare LLC
- X-ray devices with nanotube emitters and methods of forming8 Oct 2026US 2026/0311951 A1Varex Imaging Corporation
- X-ray source with multiple grids2 Jul 2026US 2026/0190208 A1Varex Imaging Corporation
- X-ray electron emission control device9 Apr 2026US 2026/0101426 A1LG Electronics Inc.
- Electron emission source including high-density carbon structure-based film, method for manufacturing the same, and x-ray tube using the same2 Apr 2026US 2026/0094782 A1Lmx Co., Ltd.
- Multi-directional connection hub and cold cathode x-ray tube that can easily change its characteristics and its connection method19 Mar 2026US 2026/0081090 A1Electronics and Telecommunications Research Institute
Most cited
By later US patents
- Tetrahedron beam computed tomography318US 7,760,849 B2William Beaumont Hospital · 2010
- X-ray generating mechanism using electron field emission cathode190US 6,553,096 B1University of North Carolina - Chapel Hill · 2003
- X-ray generator174US 6,188,747 B1Heimann Systems GmbH · 2001
- X-ray tubes136US 4,344,011 AHitachi, Ltd. · 1982
- Field emitter based electron source with minimized beam emittance growth118US 7,801,277 B2General Electric Company · 2010