G01R 23/09
Using analogue integrators
Official title: using analogue integrators, e.g. capacitors establishing a mean value by balance of input signals and defined discharge signals or leakage
G01R23/09 (Using analogue integrators) appears on 34 US grants and 22 published applications in this corpus.
Search patents in G01R- Granted patents
- 34
- Published applications
- 22
- Assignees
- 38
- Inventors
- 50
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 2 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 2 |
| 2013 | 0 | 0 |
| 2014 | 3 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for testing switch signals of an inverter of an electric machine controlled via a pulse-width modulation4 Nov 2025US 12,461,133 B2Schaeffler Technologies AG & Co. KG
- Frequency monitoring circuitry with voltage conversion4 Mar 2025US 12,241,920 B2Apple Inc.
- Multiphase frequency to voltage converter27 Sep 2022US 11,456,747 B1NXP USA, Inc.
- Oscillator circuit21 Sep 2021US 11,128,256 B2Rohm Co., Ltd.
- Security method for monitoring an optical module and three-dimensional sensor using the same29 Dec 2020US 10,877,080 B2General Interface Solutions Limited
- Frequency Monitoring Circuitry with Voltage Conversion16 Oct 2025US 2025/0321254 A1Apple Inc.
- Method for testing switch signals of an inverter of an electric machine controlled via a pulse-width modulation2 May 2024US 2024/0142505 A1Schaeffler Technologies AG & Co. KG
- Frequency Monitoring Circuitry with Voltage Conversion4 Apr 2024US 2024/0110959 A1Apple Inc.
- Multiphase Frequency To Voltage Converter20 Oct 2022US 2022/0337257 A1NXP USA, Inc.
- Analog counter circuits and read-out integrated circuits and infrared detectors incorporating the same25 Aug 2022US 2022/0272298 A1L3 Cincinnati Electronics Corporation
Most cited
By later US patents
- Block distortion detection method, block distortion detection apparatus, block distortion removal method, and block distortion removal apparatus71US 7,031,393 B2Matsushita Electric Industrial Co., Ltd. · 2006
- Calibrating and measuring circuit for a capacitive probe-type instrument48US 4,130,796 AWestinghouse Electric Corp. · 1978
- Digital frequency measuring circuitry20US 4,051,434 AGeneral Motors Corporation · 1977
- Circuit for converting a frequency of an input signal so a signal having a digital value corresponding to the frequency11US 5,357,196 AJeco Co., Ltd. · 1994
- Frequency-to-binary converter9US 4,251,869 AFischer & Porter Co. · 1981