G01R 23/167
With digital filters
Official title: with digital filters
G01R23/167 (With digital filters) appears on 106 US grants and 93 published applications in this corpus.
Search patents in G01R- Granted patents
- 106
- Published applications
- 93
- Assignees
- 96
- Inventors
- 252
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 0 |
| 2003 | 2 | 0 |
| 2004 | 2 | 1 |
| 2005 | 4 | 6 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 3 | 5 |
| 2015 | 2 | 0 |
| 2016 | 2 | 6 |
| 2017 | 2 | 7 |
| 2018 | 3 | 13 |
| 2019 | 8 | 8 |
| 2020 | 10 | 7 |
| 2021 | 11 | 6 |
| 2022 | 2 | 7 |
| 2023 | 5 | 8 |
| 2024 | 7 | 7 |
| 2025 | 8 | 2 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for power line communication network30 Dec 2025US 12,511,525 B2Endura IP Holdings Ltd.
- Filter bank circuit, spectrum analyzer, signal analyzer, signal generator using the same, and control method for the filter bank circuit9 Dec 2025US 12,493,066 B2Anritsu Corporation
- Discharge detection device2 Dec 2025US 12,487,270 B2Nitto Kogyo Co., Ltd.
- Method for partial discharge recognition in high voltage applications and unit using the method28 Oct 2025US 12,455,311 B2HSP Hochspannungsgeräte GmbH
- Circuit for determining the frequency of a signal21 Oct 2025US 12,449,455 B2Infineon Technologies AG
- Arcing detection method and system28 May 2026US 2026/0149258 A1Gigadevice Semiconductor Inc.
- Method and Apparatus for Power Line Communication Network19 Mar 2026US 2026/0080236 A1Endura IP Holdings Ltd.
- Hybrid time-frequency representation (htfr) based power characterization15 Jan 2026US 2026/0016512 A1
- Measurement application device and method15 Jan 2026US 2026/0016520 A1
- Multi-channel spectrum analyzer with multi-channel analog-digital-converters (adcs)18 Dec 2025US 2025/0383374 A1Viavi Solutions Inc.
Most cited
By later US patents
- Depth-of-focus imaging process method182US 4,661,986 ARCA Corporation · 1987
- Real-time hierarchal pyramid signal processing apparatus174US 4,674,125 ARCA Corporation · 1987
- System and methods for detecting and characterizing electromagnetic emissions166US 10,338,118 B1Aurora Insight Inc. · 2019
- Microprocessor controlled digital detector112US 4,258,423 AThe United States of America as represented by the Secretary of the Army · 1981
- Signal processing architecture which improves sonar and pulse Doppler radar performance and tracking capability55US 6,078,281 AMilkovich Systems Engineering · 2000