H03M 3/404
Characterised by the type of bandpass filters used
Official title: {characterised by the type of bandpass filters used}
H03M3/404 (Characterised by the type of bandpass filters used) appears on 111 US grants and 76 published applications in this corpus.
Search patents in H03M- Granted patents
- 111
- Published applications
- 76
- Assignees
- 67
- Inventors
- 187
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 8 |
| 2003 | 5 | 3 |
| 2004 | 5 | 4 |
| 2005 | 4 | 4 |
| 2006 | 6 | 2 |
| 2007 | 5 | 1 |
| 2008 | 1 | 4 |
| 2009 | 3 | 2 |
| 2010 | 3 | 6 |
| 2011 | 8 | 4 |
| 2012 | 2 | 4 |
| 2013 | 7 | 2 |
| 2014 | 3 | 2 |
| 2015 | 5 | 5 |
| 2016 | 3 | 6 |
| 2017 | 13 | 5 |
| 2018 | 1 | 1 |
| 2019 | 4 | 4 |
| 2020 | 3 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 2 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Second order audio continuous time delta sigma modulator with resonator16 Jun 2026US 12,658,936 B2Skyworks Solutions, Inc.
- Systems and methods for asynchronous data communication in noisy environments20 May 2025US 12,308,859 B2Acceleware Ltd.
- Sigma delta modulator and method therefor14 Mar 2023US 11,606,102 B2NXP B. V.
- Apparatus for mitigating wandering spurs in a fractional-N frequency synthesizer10 Jan 2023US 11,552,645 B2University College Dublin
- Delta sigma modulator13 Sep 2022US 11,444,635 B2Texas Instruments Incorporated
- Delta-sigma analog-to-digital converter and battery monitor device16 Jul 2026US 2026/0205138 A1Denso Corporation
- Continuous-time bandpass sigma-delta modulator and electronic device4 Sep 2025US 2025/0279789 A1Chongqing GigaChip Technology Co., Ltd.
- Second order audio continuous time delta sigma modulator with resonator15 Aug 2024US 2024/0275399 A1Skyworks Solutions, Inc.
- Systems and methods for asynchronous data communication in noisy environments9 May 2024US 2024/0154621 A1Acceleware Ltd.
- Sigma delta modulator and method therefor29 Dec 2022US 2022/0416809 A1NXP B.V.
Most cited
By later US patents
- Multi-loop .SIGMA. .DELTA. analog to digital converter153US 5,982,315 AQUALCOMM Incorporated · 1999
- Method and arrangement for a sigma delta converter for bandpass signals146US 4,857,928 AMotorola, Inc. · 1989
- Sigma-delta analog-to-digital converter with filtration having controlled pole-zero locations, and apparatus therefor113US 5,392,042 AMartin Marietta Corporation · 1995
- Component insensitive, analog bandpass filter105US 5,523,719 ARockwell International Corporation · 1996
- Bandpass sigma-delta modulator employing high-Q resonator for narrowband noise suppression92US 6,157,329 AMassachusetts Institute of Technology · 2000