H03H 19/004
Switched capacitor networks
Official title: {Switched capacitor networks}
H03H19/004 (Switched capacitor networks) appears on 531 US grants and 311 published applications in this corpus.
Search patents in H03H- Granted patents
- 531
- Published applications
- 311
- Assignees
- 225
- Inventors
- 786
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 7 | 0 |
| 1982 | 22 | 0 |
| 1983 | 6 | 0 |
| 1984 | 12 | 0 |
| 1985 | 16 | 0 |
| 1986 | 14 | 0 |
| 1987 | 4 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 8 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 5 | 0 |
| 2000 | 13 | 0 |
| 2001 | 12 | 5 |
| 2002 | 14 | 10 |
| 2003 | 11 | 7 |
| 2004 | 5 | 8 |
| 2005 | 8 | 13 |
| 2006 | 9 | 8 |
| 2007 | 8 | 14 |
| 2008 | 14 | 11 |
| 2009 | 7 | 21 |
| 2010 | 18 | 20 |
| 2011 | 16 | 20 |
| 2012 | 17 | 8 |
| 2013 | 19 | 13 |
| 2014 | 21 | 17 |
| 2015 | 8 | 13 |
| 2016 | 23 | 22 |
| 2017 | 21 | 18 |
| 2018 | 23 | 12 |
| 2019 | 22 | 24 |
| 2020 | 27 | 9 |
| 2021 | 10 | 11 |
| 2022 | 5 | 7 |
| 2023 | 3 | 8 |
| 2024 | 11 | 3 |
| 2025 | 8 | 5 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-slope switching circuit for switched-capacitor signal integrator21 Jul 2026US 12,689,371 B1QUALCOMM Incorporated
- Tracker module, radio frequency system, and communication device19 May 2026US 12,633,903 B2Murata Manufacturing Co., Ltd.
- Switchable-reactor unit, variable reactor, high-frequency generator, and impedance adjustment assembly having a switchable-reactor unit17 Feb 2026US 12,556,153 B2TRUMPF Huettinger GmbH + Co. KG
- Large programmable delay at high frequency through aliasing18 Nov 2025US 12,476,624 B1National Technology & Engineering Solutions of Sandia, LLC
- Audio amplifying circuit and playing device21 Oct 2025US 12,451,849 B2Rda Microelectronics (Shanghai) Co., Ltd.
- Apparatus and techniques for jammer signal filtering27 Aug 2026US 2026/0254440 A1QUALCOMM Incorporated
- Bandpass filter18 Jun 2026US 2026/0172004 A1Mitsubishi Electric Corporation
- Switch-capacitor filter for receiver baseband anti-aliasing signal filtering21 May 2026US 2026/0142670 A1QUALCOMM Incorporated
- Switched capacitor equalizer using integrating amplifier9 Apr 2026US 2026/0100695 A1Korea University Research and Business Foundation
- Switching circuit21 Aug 2025US 2025/0266828 A1Realtek Semiconductor Corp.
Most cited
By later US patents
- Switched capacitor analog circuits using polysilicon thin film technology289US 5,589,847 AXerox Corporation · 1996
- High pass switched capacitor filter section130US 4,210,872 AAmerican Microsystems, Inc. · 1980
- Biquadratic switched-capacitor filter using single operational amplifier129US 5,736,895 AIndustrial Technology Research Institute · 1998
- Integral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audio127US 5,012,245 AAT&T Bell Laboratories · 1991
- Double sampled biquad switched capacitor filter125US 5,495,200 AAnalog Devices, Inc. · 1996