H03H 11/1256
Tow-thomas biquad
Official title: {Tow-Thomas biquad}
H03H11/1256 (Tow-thomas biquad) appears on 23 US grants and 21 published applications in this corpus.
Search patents in H03H- Granted patents
- 23
- Published applications
- 21
- Assignees
- 17
- Inventors
- 46
- Latest grant
- 31 Mar 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 3 |
| 2014 | 1 | 1 |
| 2015 | 3 | 1 |
| 2016 | 1 | 0 |
| 2017 | 4 | 5 |
| 2018 | 3 | 2 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year.
Recent patents
- Active biquad filter with oscillator circuit31 Mar 2020US 10,608,601 B2QUALCOMM Incorporated
- Adjustable low-pass filter in a compact low-power receiver12 Feb 2019US 10,205,438 B2Avago Technologies International Sales Pte. Limited
- Tunable bandpass filter18 Dec 2018US 10,158,344 B2GM Global Technology Operations LLC
- Method and apparatus for signal filtering and for improving properties of electronic devices13 Mar 2018US 9,917,570 B2Avatekh, Inc.
- Multimode reconfigurable amplifier and analog filter including the same6 Mar 2018US 9,912,311 B2Samsung Electronics Co., Ltd.
- Filtering device and radar sensor including the same7 Aug 2025US 2025/0253828 A1Samsung Electronics Co., Ltd.
- Active biquad filter with oscillator circuit6 Dec 2018US 2018/0351535 A1QUALCOMM Incorporated
- Tunable bandpass filter19 Jul 2018US 2018/0205367 A1GM Global Technology Operations LLC
- Adjustable low-pass filter in a compact low-power receiver25 May 2017US 2017/0149412 A1Broadcom Corporation
- Method and Implementation for Accurate Gain-Bandwidth Product Tuning4 May 2017US 2017/0126207 A1Futurewei Technologies, Inc.
Most cited
By later US patents
- Active filter circuit with dynamically modifiable gain29US 6,958,644 B2The Trustees of Columbia University in the City of New York · 2005
- Controlling the bandwidth of an analog filter12US 7,937,058 B2Freescale Semiconductor, Inc. · 2011
- Integrated filter tuning method and apparatus11US 6,404,276 B1LSI Logic Corporation · 2002
- Broadband analog radio-frequency integrator6US 8,866,531 B2Newlans, Inc. · 2014
- Center frequency and Q tuning of biquad filter by amplitude-limited oscillation-based calibration6US 9,673,782 B1QUALCOMM Incorporated · 2017