H03F 3/183
With semiconductor devices only
Official title: with semiconductor devices only
H03F3/183 (With semiconductor devices only) appears on 1,550 US grants and 1,629 published applications in this corpus.
Search patents in H03F- Granted patents
- 1,550
- Published applications
- 1,629
- Assignees
- 524
- Inventors
- 2,244
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 9 | 0 |
| 1981 | 12 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 9 | 0 |
| 1985 | 12 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 2 | 0 |
| 2000 | 8 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 2 |
| 2003 | 4 | 7 |
| 2004 | 2 | 9 |
| 2005 | 4 | 11 |
| 2006 | 13 | 6 |
| 2007 | 9 | 14 |
| 2008 | 9 | 22 |
| 2009 | 9 | 33 |
| 2010 | 24 | 25 |
| 2011 | 23 | 41 |
| 2012 | 37 | 41 |
| 2013 | 38 | 48 |
| 2014 | 38 | 55 |
| 2015 | 53 | 78 |
| 2016 | 103 | 105 |
| 2017 | 116 | 127 |
| 2018 | 124 | 118 |
| 2019 | 128 | 114 |
| 2020 | 132 | 132 |
| 2021 | 90 | 97 |
| 2022 | 119 | 119 |
| 2023 | 96 | 133 |
| 2024 | 82 | 106 |
| 2025 | 91 | 96 |
| 2026 | 65 | 90 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Digital-to-analog converter, chip, and electronic device6 Oct 2026US 12,756,402 B2Sg Micro Corp
- Auto-recovery overcurrent protection for audio notification appliance circuit in fire protection system6 Oct 2026US 12,756,974 B2Tyco Fire & Security GmbH
- Method for adaptively adjusting start-up time of audio amplifier and associated system on chip29 Sep 2026US 12,750,016 B2Elite Semiconductor Microelectronics Technology Inc.
- Semiconductor device and electronic apparatus15 Sep 2026US 12,739,580 B2Seiko Epson Corporation
- Systems and methods for synchronizing and rendering audio signals via an auxiliary synchronization back channel8 Sep 2026US 12,732,752 B2Lenbrook Industries Limited
- Speaker System8 Oct 2026US 2026/0313277 A1
- Amplifier system with output stage24 Sep 2026US 2026/0291444 A1Harman International Industries, Incorporated
- Zero-common-mode modulation with digital feedback to damp common-mode resonance and suppress cross-over distortion24 Sep 2026US 2026/0291447 A1Monolithic Power Systems, Inc.
- Switching amplifiers27 Aug 2026US 2026/0254416 A1Cirrus Logic International Semiconductor Ltd.
- Switching amplifiers27 Aug 2026US 2026/0254417 A1Cirrus Logic International Semiconductor Ltd.
Most cited
By later US patents
- Bypassing amplification301US 8,063,698 B2Bose Corporation · 2011
- Monolithic class D amplifier170US 5,973,368 A1999
- Load impedance detector for audio power amplifiers161US 4,549,147 AVictor Company of Japan, Ltd. · 1985
- RF amplifier architecture and related techniques141US 8,824,978 B2Eta Devices, Inc. · 2014
- Amplifier circuit and method of amplifying a signal in an amplifier circuit98US 8,198,941 B2Wolfson Microelectronics plc · 2012