H01J 25/11
Extended interaction klystrons
H01J25/11 (Extended interaction klystrons) appears on 13 US grants and 4 published applications in this corpus.
Search patents in H01J- Granted patents
- 13
- Published applications
- 4
- Assignees
- 9
- Inventors
- 20
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Klystron device30 Sep 2025US 12,431,316 B2Canon Electron Tubes & Devices Co., Ltd.
- Extended interaction device comprising a core and shell device body for supporting ring-shaped resonant cavities, electron beam tunnels and a coupling groove therein and an output waveguide at a middle portion of the shell26 Nov 2019US 10,490,384 B2University of Electronic Science and Technology of China
- Vacuum electron device drift tube22 Aug 2017US 9,741,521 B1Varex Imaging Corporation
- Broadband, inverted slot mode, coupled cavity circuit15 Jul 2003US 6,593,695 B2Northrop Grumman Corporation
- Broadband, inverted slot mode, coupled cavity circuit9 Jul 2002US 6,417,622 B2Northrop Grumman Corporation
- Klystron device4 Jan 2024US 2024/0006143 A1Canon Electron Tubes & Devices Co., Ltd.
- Extended interaction device comprising coaxial resonant cavities and multiple electron beams18 Oct 2018US 2018/0301311 A1University of Electronic Science and Technology of China
- Broadband, inverted slot mode, coupled cavity circuit13 Feb 2003US 2003/0030390 A1Northrop Grumman Corporation
- Broadband, inverted slot mode, coupled cavity circuit16 Aug 2001US 2001/0013757 A1Northrop Grumman Corporation
Most cited
By later US patents
- High performance extended interaction output circuit12US 4,931,695 ALitton Systems, Inc. · 1990
- Extended interaction output circuit using modified disk-loaded waveguide8US 5,469,022 ALitton Systems, Inc. · 1995
- Broadband, inverted slot mode, coupled cavity circuit8US 6,593,695 B2Northrop Grumman Corporation · 2003
- Broadband, inverted slot mode, coupled cavity circuit6US 6,417,622 B2Northrop Grumman Corporation · 2002
- Vacuum electron device drift tube6US 9,741,521 B1Varex Imaging Corporation · 2017