H01J 25/44
The forward travelling wave being utilised
Official title: the forward travelling wave being utilised
H01J25/44 (The forward travelling wave being utilised) appears on 19 US grants and 6 published applications in this corpus.
Search patents in H01J- Granted patents
- 19
- Published applications
- 6
- Assignees
- 12
- Inventors
- 30
- Latest grant
- 17 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 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 | 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 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Methods of making a self-assembled slow-wave structures17 Sep 2024US 12,091,746 B2The Regents of the University of New Mexico
- Microwave tube and method for controlling the same24 Oct 2023US 11,798,770 B2NEC Network and Sensor Systems, Ltd.
- Traveling wave tube amplifier having a helical slow-wave structure supported by a cylindrical scaffold14 Dec 2021US 11,201,028 B2The Regents of the University of New Mexico
- Asymmetrical slow wave structures to eliminate backward wave oscillations in wideband traveling wave tubes1 Dec 2015US 9,202,660 B2Teledyne Wireless, LLC
- Power management system for dual travelling wave tube amplifier18 Mar 2014US 8,674,759 B2Thales
- Microwave tube and method for controlling the same15 Dec 2022US 2022/0399178 A1NEC Network and Sensor Systems, Ltd.
- Self-assembled helical slow-wave structures for high-frequency signals10 Feb 2022US 2022/0044904 A1The Regents of the University of New Mexico
- Self-assembled helical slow-wave structures for high-frequency signals1 Apr 2021US 2021/0099142 A1The Regents of the University of New Mexico
- Asymmetrical Slow Wave Structures to Eliminate Backward Wave Oscillations in Wideband Traveling Wave Tubes18 Sep 2014US 2014/0265826 A1Teledyne Wireless, LLC
- Power Management System for Dual Travelling Wave Tube Amplifier25 Oct 2012US 2012/0268203 A1Thales
Most cited
By later US patents
- Low noise crossed-field amplifier6US 4,814,720 A1989
- High gain miniature crossed-field amplifier6US 4,831,335 ALitton Systems, Inc. · 1989
- High gain crossed field amplifier4US 4,087,718 AVarian Associates, Inc. · 1978
- Photonic crystal ribbon-beam traveling wave amplifier4US 7,538,608 B2Massachusetts Institute of Technology · 2009
- Method and apparatus for reducing noise in crossed-field amplifiers3US 4,082,979 AVarian Associates, Inc. · 1978