H01J 25/14
With tube-like electron stream coaxial with the axis of the resonators
Official title: with tube-like electron stream coaxial with the axis of the resonators
H01J25/14 (With tube-like electron stream coaxial with the axis of the resonators) appears on 9 US grants and 4 published applications in this corpus.
Search patents in H01J- Granted patents
- 9
- Published applications
- 4
- Assignees
- 6
- Inventors
- 18
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 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
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- Multibeam klystron3 Oct 2006US 7,116,051 B2
- Multilayer field emission klystron26 Apr 2005US 6,885,152 B2Motorola, Inc.
- Hollow beam electron tube having TM.sub.0x0 resonators, where X is greater than 116 Dec 1997US 5,698,949 ACommunications & Power Industries, Inc.
Most cited
By later US patents
- Hollow beam electron tube having TM.sub.0x0 resonators, where X is greater than 112US 5,698,949 ACommunications & Power Industries, Inc. · 1997
- Plasma klystron amplifier9US 5,386,177 AThe United States of America as represented by the Secretary of the Navy · 1995
- Multibeam klystron7US 7,116,051 B22006
- Microwave amplifier tube having two ring resonators5US 4,508,992 AU. S. Philips Corporation · 1985
- High-gain Klystron-tetrode5US 4,567,406 ASiemens Aktiengesellschaft · 1986