H03F 1/54
With tubes only
Official title: with tubes only {(testing of vacuum tubes G01R31/25)}
H03F1/54 (With tubes only) appears on 18 US grants and 7 published applications in this corpus.
Search patents in H03F- Granted patents
- 18
- Published applications
- 7
- Assignees
- 14
- Inventors
- 32
- Latest grant
- 8 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Real-time and adaptive radio-frequency power protection8 Aug 2023US 11,722,103 B2Renesas Electronics America Inc.
- Real-time and adaptive radio-frequency power protection13 Sep 2022US 11,444,584 B2Renesas Electronics America Inc.
- Real-time and adaptive radio-frequency power protection2 Mar 2021US 10,938,355 B2Integrated Device Technology, Inc.
- Energy supply unit for a traveling wave tube15 Sep 2020US 10,778,166 B2Tesat-Spacecom GmbH & Co. KG
- Circuit for providing a high and a low impedance and a system comprising the circuit26 Mar 2019US 10,243,521 B2Sonion Nederland B. V.
- Real-time and adaptive radio-frequency power protection1 Dec 2022US 2022/0385243 A1Renesas Electronics America Inc.
- Real-time and adaptive radio-frequency power protection20 May 2021US 2021/0152136 A1Renesas Electronics America Inc.
- Real-time and adaptive radio-frequency power protection21 Nov 2019US 2019/0356279 A1Integrated Device Technology, Inc.
- Circuit for providing a high and a low impedance and a system comprising the circuit24 May 2018US 2018/0145643 A1Sonion Nederland B. V.
- Circuit for providing a high and a low impedance and a system comprising the circuit24 May 2018US 2018/0146301 A1Sonion Nederland B. V.
Most cited
By later US patents
- Silicon carbide high frequency high power amplifier39US 5,994,965 ACBS Inc. · 1999
- Circuit for protecting traveling-wave tubes against faults of a power supply20US 4,323,853 ANippon Electric Co., Ltd. · 1982
- Travelling-wave tube protection arrangement16US 5,500,621 AMartin Marietta Corporation · 1996
- Anti crow bar current interrupter for microwave tube transmitters13US 5,162,965 AThe United States of America as represented by the Secretary of the Air Force · 1992
- Lightweight amplifier6US 9,203,365 B12015