H01J 3/027
Construction of the gun or parts thereof
Official title: {Construction of the gun or parts thereof (H01J3/021 - H01J3/025, H01J3/026 and H01J3/028 take precedence)}
H01J3/027 (Construction of the gun or parts thereof) appears on 108 US grants and 88 published applications in this corpus.
Search patents in H01J- Granted patents
- 108
- Published applications
- 88
- Assignees
- 83
- Inventors
- 261
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 0 |
| 2003 | 1 | 4 |
| 2004 | 1 | 6 |
| 2005 | 3 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 2 |
| 2009 | 1 | 5 |
| 2010 | 4 | 2 |
| 2011 | 3 | 5 |
| 2012 | 4 | 1 |
| 2013 | 3 | 11 |
| 2014 | 5 | 3 |
| 2015 | 5 | 6 |
| 2016 | 9 | 6 |
| 2017 | 1 | 3 |
| 2018 | 3 | 4 |
| 2019 | 5 | 7 |
| 2020 | 9 | 5 |
| 2021 | 5 | 6 |
| 2022 | 5 | 1 |
| 2023 | 2 | 2 |
| 2024 | 3 | 2 |
| 2025 | 3 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Emitter and device comprising same24 Mar 2026US 12,586,747 B2Denka Company Limited
- Electron beam source and the use of the same8 Jul 2025US 12,350,754 B2Arcam AB
- Charged particle source module29 Apr 2025US 12,288,663 B2ASML Netherlands B. V.
- Electron gun8 Apr 2025US 12,272,514 B2Shanghai United Imaging Healthcare Co., Ltd.
- X-ray cathode focusing element31 Dec 2024US 12,183,536 B2GE Precision Healthcare LLC
- Electron gun17 Jul 2025US 2025/0232940 A1Shanghai United Imaging Healthcare Co., Ltd.
- Emitter and device comprising same3 Jul 2025US 2025/0218717 A1Denka Company Limited
- Field emission cathode device and method of forming a field emission cathode device7 Mar 2024US 2024/0079196 A1NCX Corporation
- Electron gun4 Jan 2024US 2024/0006142 A1Shanghai United Imaging Healthcare Co., Ltd.
- X-ray cathode focusing element22 Jun 2023US 2023/0197396 A1GE Precision Healthcare LLC
Most cited
By later US patents
- Electron beam accelerator92US 5,962,995 AApplied Advanced Technologies, Inc. · 1999
- Electron beam accelerator53US 6,407,492 B1Advanced Electron Beams, Inc. · 2002
- Electrostatic lens array44US 8,748,842 B2Canon Kabushiki Kaisha · 2014
- Microfocus X-ray tube34US 5,077,777 AMicro Focus Imaging Corp. · 1991
- Method and apparatus for producing an electron beam from a thermionic cathode33US 4,528,474 A1985