H03G 3/14
In frequency-selective amplifiers
Official title: in frequency-selective amplifiers
H03G3/14 (In frequency-selective amplifiers) appears on 28 US grants and 19 published applications in this corpus.
Search patents in H03G- Granted patents
- 28
- Published applications
- 19
- Assignees
- 23
- Inventors
- 53
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 2 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 2 | 2 |
| 2019 | 1 | 2 |
| 2020 | 1 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 3 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 3 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Audio signal processing16 Dec 2025US 12,500,553 B2Solid State Logic UK Limited
- Amplification circuit14 Oct 2025US 12,445,095 B2Murata Manufacturing Co., Ltd.
- Bidirectional variable gain amplifiers for radio frequency communication systems5 Aug 2025US 12,381,528 B2Skyworks Solutions, Inc.
- Interchangeable cartridge audio preamplifier for microphone, and kit comprising the same6 Aug 2024US 12,057,815 B2Eldora Productions
- Variable gain circuit, high frequency switch, and transistor circuit8 Mar 2022US 11,271,534 B2Murata Manufacturing Co., Ltd.
- Bidirectional variable gain amplifiers for radio frequency communication systems25 Dec 2025US 2025/0392277 A1Skyworks Solutions, Inc.
- Radiofrequency device with multiple operating modes2 Oct 2025US 2025/0309848 A1STMicroelectronics International N. V.
- Interchangeable cartridge audio preamplifier for microphone, and kit comprising the same26 Jan 2023US 2023/0022296 A1Eldora Productions
- Audio Signal Processing22 Dec 2022US 2022/0407473 A1Solid State Logic UK Limited
- Amplification circuit15 Sep 2022US 2022/0294398 A1Murata Manufacturing Co., Ltd.
Most cited
By later US patents
- Radio receiver speech amplifier circuit22US 4,721,923 AMotorola, Inc. · 1988
- dB-linear process-independent variable gain amplifier19US 7,889,006 B1Maxim Integrated Products, Inc. · 2011
- Compace HBT wide band microwave variable gain active feedback amplifier16US 5,355,096 ATRW Inc. · 1994
- Amplifier circuit having an operation point maintaining input and output voltages constant even if a gain thereof is varied15US 5,304,946 AHitachi, Ltd. · 1994
- AM-FM receiver having improved mode conversion10US 4,050,022 AGeneral Electric Company · 1977