H03F 1/36
In discharge-tube amplifiers
Official title: in discharge-tube amplifiers
H03F1/36 (In discharge-tube amplifiers) appears on 22 US grants and 17 published applications in this corpus.
Search patents in H03F- Granted patents
- 22
- Published applications
- 17
- Assignees
- 17
- Inventors
- 19
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 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 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 2 | 1 |
| 2016 | 4 | 2 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 5 |
| 2023 | 1 | 1 |
| 2024 | 6 | 2 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power detectors with enhanced dynamic range29 Sep 2026US 12,750,076 B2Skyworks Solutions, Inc.
- Differential amplifier including dual magnetically coupled feedback loops15 Apr 2025US 12,278,599 B2QuantalRF AG
- Amplifier linearization using magnetically coupled feedback provided by a transformer coupled to a balun-based load3 Dec 2024US 12,160,203 B2QuantalRF AG
- Amplifier linearization using magnetically coupled feedback19 Nov 2024US 12,149,210 B2QuantalRF AG
- Amplifier device, audio device, and method for controlling amplifier device13 Aug 2024US 12,063,012 B2Moriyama Meiboku Co., Ltd.
- Differential amplifier including dual magnetically coupled feedback loops28 Aug 2025US 2025/0274081 A1QuantalRF AG
- Power detectors with enhanced dynamic range31 Oct 2024US 2024/0364371 A1Skyworks Solutions, Inc.
- Amplifier device, audio device, and method for controlling amplifier device6 Jun 2024US 2024/0186959 A1Moriyama Meiboku Co., Ltd.
- Power detectors with enhanced dynamic range26 Oct 2023US 2023/0344455 A1Skyworks Solutions, Inc.
- Method of improving linearity of amplifier circuit including magnetically coupled feedback loop and dc bias current adjustment without impacting amplifier gain31 Mar 2022US 2022/0102070 A1QuantalRF AG
Most cited
By later US patents
- Haptic effects broadcasting during a group event28US 9,098,984 B2Immersion Corporation · 2015
- Amplifier including magnetically coupled feedback loop and stacked input and output stages adapted for DC current reuse7US 11,979,114 B2QuantalRF AG · 2024
- Method and apparatus for linear low-frequency feedback in monolithic low-noise charge amplifiers7US 6,998,913 B2Brookhaven Science Associates, LLC · 2006
- Method of improving linearity of amplifier circuit including magnetically coupled feedback loop and DC bias current adjustment without impacting amplifier gain5US 12,034,411 B2QuantalRF AG · 2024
- Increasing amplifier bandwidth by positive capacitive feedback5US 7,423,483 B1Marvell International Ltd. · 2008