H01J 23/207
Tuning of single resonator
H01J23/207 (Tuning of single resonator) appears on 26 US grants and 8 published applications in this corpus.
Search patents in H01J- Granted patents
- 26
- Published applications
- 8
- Assignees
- 20
- Inventors
- 44
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- RF source protection9 Sep 2025US 12,414,221 B2Elekta Limited
- Cavity-enhanced fourier transform spectroscopy for chiral analysis16 May 2023US 11,650,148 B2University of Virginia Patent Foundation
- Cavity-enhanced fourier transform spectroscopy for chiral analysis1 Feb 2022US 11,237,104 B2University of Virginia Patent Foundation
- Multi-frequency klystron designed for high efficiency4 Jul 2017US 9,697,978 B2The Board of Trustees of the Leland Stanford Junior University
- Bowtie deflector cavity for a linear beam device24 Aug 2010US 7,782,130 B2L-3 Communications Corporation
- Rf source protection23 Nov 2023US 2023/0380049 A1Elekta Limited
- Cavity-enhanced fourier transform spectroscopy for chiral analysis25 Aug 2022US 2022/0268699 A1Universtiy of Virginia Patent Foundation
- Magnetron26 May 2022US 2022/0165534 A1
- Cavity-enhanced fourier transform spectroscopy for chiral analysis3 Oct 2019US 2019/0302015 A1University of Virginia Patent Foundation
- Multi-Frequency Klystron Designed for High Efficiency22 Dec 2016US 2016/0372296 A1The Board of Trustees of the Leland Stanford Junior University
Most cited
By later US patents
- Wideband electronic frequency tuning for orotrons55US 4,829,527 AThe United States of America as represented by the Secretary of the Army · 1989
- Cavity resonator having a variable resonant frequency16US 3,940,721 ANippon Electric Co., Ltd. · 1976
- Coaxial magnetron having cavity walls vibrated by tuning fork12US 4,518,932 AEnglish Electric Valve Company Limited · 1985
- Tubular capacitor for use in an electron beam tube12US 6,781,313 B2Marconi Applied Technologies Limited · 2004
- High frequency vacuum tube with closely spaced cathode and non-emissive grid9US 5,572,092 ACommunications & Power Industries, Inc. · 1996