H01J 25/38
The forward travelling wave being utilised
Official title: the forward travelling wave being utilised
H01J25/38 (The forward travelling wave being utilised) appears on 36 US grants and 8 published applications in this corpus.
Search patents in H01J- Granted patents
- 36
- Published applications
- 8
- Assignees
- 22
- Inventors
- 62
- Latest grant
- 8 Mar 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 2 | 2 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Microwave amplification device including a microwave electron tube having a getter that can be controlled8 Mar 2022US 11,270,863 B2NEC Network and Sensor Systems, Ltd.
- Slow-wave circuit26 Nov 2019US 10,490,382 B2NEC Network and Sensor Systems, Ltd.
- Internal load for a travelling wave tube using a folded-waveguide slow-wave structure12 Nov 2019US 10,475,617 B2Thales
- Traveling wave tube loaded by a material having negative permittivity and positive permeability2 Aug 2016US 9,406,477 B2Wisconsin Alumni Research Foundation
- Power management system for dual travelling wave tube amplifier18 Mar 2014US 8,674,759 B2Thales
- Klystron Driver26 Nov 2020US 2020/0373114 A1Eagle Harbor Technologies, Inc.
- Microwave electron tube, getter, microwave amplification device and power source20 Feb 2020US 2020/0058460 A1NEC Network and Sensor Systems, Ltd.
- Internal load for a travelling wave tube using a folded-waveguide slow-wave structure30 May 2019US 2019/0164714 A1Thales
- Slow-wave circuit25 Apr 2019US 2019/0122848 A1NEC Network and Sensor Systems, Ltd.
- Epsilon negative loaded traveling wave tube10 Sep 2015US 2015/0256139 A1Wisconsin Alumni Research Foundation
Most cited
By later US patents
- High voltage power supply particularly adapted for a TWT39US 4,777,406 AVarian Associates, Inc. · 1988
- High voltage power supply for a microwave electron tube27US 4,866,344 AVarian Associates, Inc. · 1989
- Travelling-wave tube protection arrangement16US 5,500,621 AMartin Marietta Corporation · 1996
- Wide-band coupled-cavity type traveling-wave tube12US 4,147,956 ANippon Electric Co., Ltd. · 1979
- Frequency-spreading coupler12US 4,496,876 AThe United States of America as represented by the Secretary of the Navy · 1985