H01J 2235/068
Multi-cathode assembly
H01J2235/068 (Multi-cathode assembly) appears on 268 US grants and 281 published applications in this corpus.
Search patents in H01J- Granted patents
- 268
- Published applications
- 281
- Assignees
- 121
- Inventors
- 505
- Latest grant
- 18 Aug 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 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 3 |
| 2003 | 1 | 1 |
| 2004 | 1 | 5 |
| 2005 | 3 | 8 |
| 2006 | 9 | 9 |
| 2007 | 5 | 11 |
| 2008 | 6 | 9 |
| 2009 | 7 | 14 |
| 2010 | 11 | 34 |
| 2011 | 15 | 27 |
| 2012 | 19 | 18 |
| 2013 | 16 | 11 |
| 2014 | 10 | 11 |
| 2015 | 15 | 18 |
| 2016 | 17 | 7 |
| 2017 | 13 | 10 |
| 2018 | 6 | 8 |
| 2019 | 7 | 7 |
| 2020 | 12 | 14 |
| 2021 | 11 | 14 |
| 2022 | 15 | 10 |
| 2023 | 8 | 10 |
| 2024 | 8 | 8 |
| 2025 | 10 | 8 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Irradiation apparatus18 Aug 2026US 12,708,685 B2Precision X-Ray, Inc.
- Cathode emission device and X-ray tube using same16 Jun 2026US 12,658,398 B2Wuhan United Imaging Healthcare Co., Ltd.
- Control device and control method for electron emission device for X-ray generation19 May 2026US 12,635,061 B2LG Electronics Inc.
- Hybrid multi-source x-ray source and imaging system5 May 2026US 12,620,544 B2Varex Imaging Corporation
- X-ray imaging apparatus21 Apr 2026US 12,605,124 B2Adaptix, Inc.
- 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
- Cathode device with improved electron emitter contacting5 Feb 2026US 2026/0038762 A1Siemens Healthineers AG
- X-ray tube with field effect emitter15 Jan 2026US 2026/0018364 A1Siemens Healthineers AG
- Gridded cathode apparatuses and x-ray systems8 Jan 2026US 2026/0011522 A1Varex Imaging Corporation
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
- Devices and methods for producing multiple x-ray beams from multiple locations92US 6,980,627 B2Xintek, Inc. · 2005