H03G 1/0035
Using continuously variable impedance elements
Official title: {using continuously variable impedance elements}
H03G1/0035 (Using continuously variable impedance elements) appears on 530 US grants and 313 published applications in this corpus.
Search patents in H03G- Granted patents
- 530
- Published applications
- 313
- Assignees
- 284
- Inventors
- 887
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 9 | 0 |
| 1978 | 6 | 0 |
| 1979 | 10 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 12 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 12 | 0 |
| 1996 | 4 | 0 |
| 1997 | 9 | 0 |
| 1998 | 17 | 0 |
| 1999 | 11 | 0 |
| 2000 | 17 | 0 |
| 2001 | 13 | 3 |
| 2002 | 12 | 8 |
| 2003 | 9 | 11 |
| 2004 | 7 | 10 |
| 2005 | 16 | 25 |
| 2006 | 14 | 21 |
| 2007 | 18 | 19 |
| 2008 | 21 | 15 |
| 2009 | 21 | 17 |
| 2010 | 9 | 12 |
| 2011 | 11 | 14 |
| 2012 | 18 | 11 |
| 2013 | 10 | 9 |
| 2014 | 10 | 14 |
| 2015 | 10 | 9 |
| 2016 | 13 | 13 |
| 2017 | 18 | 20 |
| 2018 | 23 | 24 |
| 2019 | 23 | 17 |
| 2020 | 19 | 13 |
| 2021 | 12 | 10 |
| 2022 | 8 | 3 |
| 2023 | 6 | 6 |
| 2024 | 3 | 2 |
| 2025 | 6 | 2 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Attenuation circuit21 Oct 2025US 12,451,857 B2NXP B. V.
- Attenuator using variable resistors2 Sep 2025US 12,407,339 B2QUALCOMM Incorporated
- High-voltage power supply and voltage modulator9 Jul 2026US 2026/0196974 A1Applied Materials Israel Ltd.
- Current converter circuit12 Mar 2026US 2026/0074666 A1NXP B. V.
- Continuous time linear equalizer employing current-reuse and current-stealing architecture26 Feb 2026US 2026/0058849 A1QUALCOMM Incorporated
- Hetero-junction bipolar transistor amplifier control circuit29 Jan 2026US 2026/0031774 A1MACOM Technology Solutions Holdings, Inc.
- Attenuator circuit and output load circuit8 Jan 2026US 2026/0012150 A1Murata Manufacturing Co., Ltd.
Most cited
By later US patents
- Amplifier with controlled gain163US 4,441,080 ABell Telephone Laboratories, Incorporated · 1984
- Multi-mode bias circuit for power amplifiers113US 6,873,211 B1Skyworks Solutions, Inc. · 2005
- Variable-gain amplifier controlled by an analog signal and having a large dynamic range106US 5,077,541 AAnalog Devices, Inc. · 1991
- BiCMOS devices97US 5,856,695 AHarris Corporation · 1999
- Automatic control system95US 4,996,500 AHewlett-Packard Company · 1991