H01J 35/064
Details of the emitter
Official title: {Details of the emitter, e.g. material or structure (H01J35/065 takes precedence)}
H01J35/064 (Details of the emitter) appears on 281 US grants and 273 published applications in this corpus.
Search patents in H01J- Granted patents
- 281
- Published applications
- 273
- Assignees
- 128
- Inventors
- 561
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 6 | 6 |
| 2003 | 5 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 6 |
| 2006 | 5 | 5 |
| 2007 | 6 | 8 |
| 2008 | 4 | 2 |
| 2009 | 4 | 9 |
| 2010 | 7 | 16 |
| 2011 | 8 | 9 |
| 2012 | 11 | 9 |
| 2013 | 5 | 3 |
| 2014 | 4 | 7 |
| 2015 | 5 | 16 |
| 2016 | 9 | 13 |
| 2017 | 18 | 25 |
| 2018 | 18 | 15 |
| 2019 | 13 | 8 |
| 2020 | 21 | 20 |
| 2021 | 16 | 17 |
| 2022 | 14 | 12 |
| 2023 | 10 | 15 |
| 2024 | 12 | 13 |
| 2025 | 21 | 23 |
| 2026 | 10 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- X-ray generation apparatus and X-ray imaging apparatus4 Aug 2026US 12,701,647 B2Canon Anelva Corporation
- Planar filament with focused, central electron emission30 Jun 2026US 12,671,051 B2Moxtek, Inc.
- Flat emitter with compliant supported end16 Jun 2026US 12,653,467 B2GE Precision Healthcare LLC
- X-ray apparatus, electron emission device and manufacturing method26 May 2026US 12,640,329 B2KETEK GmbH Halbleiter- und Reinraumtechnik
- Electron emitter for multiple focal spot sizes19 May 2026US 12,633,488 B2Siemens Healthineers AG
- Planar filament with focused, central electron emission24 Sep 2026US 2026/0290737 A1Moxtek, Inc.
- X-ray tubes, enclosures for x-ray tubes, and methods of manufacture24 Sep 2026US 2026/0290739 A1Varex Imaging Corporation
- Electron beam emission structure and field emission device3 Sep 2026US 2026/0260836 A1Meidensha Corporation
- X-ray generation module3 Sep 2026US 2026/0262154 A1Dentium Co., Ltd.
- System and method for cathode controlled anode impact temperature27 Aug 2026US 2026/0253830 A1GE Precision Healthcare LLC
Most cited
By later US patents
- X-ray tubes136US 4,344,011 AHitachi, Ltd. · 1982
- X-ray tube apparatus128US 4,730,353 AKabushiki Kaisha Toshiba · 1988
- X-ray apparatus for computed tomography scanner107US 4,274,005 ATokyo Shibaura Denki Kabushiki Kaisha · 1981
- Fine focus X-ray tube and method of forming a microfocus of the electron emission of an X-ray tube hot cathode70US 4,573,186 AFeinfocus Rontgensysteme GmbH · 1986
- X-ray tomography method and apparatus used in conjunction with a charged particle cancer therapy system62US 8,144,832 B22012