G01R 19/0023
Measuring currents or voltages from sources with high internal resistance by means
Official title: {Measuring currents or voltages from sources with high internal resistance by means of measuring circuits with high input impedance, e.g. OP-amplifiers (electrostatic instruments G01R5/28; measuring electrostatic potential G01R15/165; measuring electrostatic fields G01R29/12; amplifiers per se H03F)}
G01R19/0023 (Measuring currents or voltages from sources with high internal resistance by means) appears on 191 US grants and 176 published applications in this corpus.
Search patents in G01R- Granted patents
- 191
- Published applications
- 176
- Assignees
- 172
- Inventors
- 379
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 3 | 2 |
| 2006 | 2 | 4 |
| 2007 | 3 | 2 |
| 2008 | 3 | 3 |
| 2009 | 3 | 6 |
| 2010 | 2 | 6 |
| 2011 | 5 | 2 |
| 2012 | 5 | 4 |
| 2013 | 3 | 5 |
| 2014 | 2 | 5 |
| 2015 | 4 | 17 |
| 2016 | 12 | 7 |
| 2017 | 9 | 6 |
| 2018 | 10 | 5 |
| 2019 | 7 | 10 |
| 2020 | 9 | 18 |
| 2021 | 12 | 10 |
| 2022 | 15 | 14 |
| 2023 | 12 | 12 |
| 2024 | 10 | 18 |
| 2025 | 12 | 8 |
| 2026 | 11 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Current measurement circuit and method15 Sep 2026US 12,736,565 B2Aptiv Technologies AG
- Voltage and current sense circuits for measuring a load connected to a power amplifier25 Aug 2026US 12,716,920 B2Goodix Technology (Hk) Company Limited
- Active probe for measuring voltage at high impedances4 Aug 2026US 12,699,117 B2Ateq
- Current sensing integrated circuit and corresponding method16 Jun 2026US 12,656,380 B2Infineon Technologies Austria AG
- Current sensing circuit adaptable to MOSFET circuits9 Jun 2026US 12,650,447 B2Himax Technologies Limited
- Multi-air-gap magnetoresistance current sensor for alternating current and direct current, and current measuring method3 Sep 2026US 2026/0259248 A1
- Analog to pulse width modulation (pwm) circuit3 Sep 2026US 2026/0261267 A1Webasto Charging Systems, Inc.
- Current sense amplifier9 Apr 2026US 2026/0098879 A1Will Semiconductor (Shanghai) Co. Ltd.
- Pulsed light-emitting diode driver with high-speed voltage detection module2 Apr 2026US 2026/0095988 A1Silanna Asia Pte Ltd
- Ultra high common mode rejection ratio high side current measurement26 Mar 2026US 2026/0086132 A1Analog Devices, Inc.
Most cited
By later US patents
- Probe holder for low current measurements88US 6,232,789 B1Cascade Microtech, Inc. · 2001
- Electric potential sensor72US 8,054,061 B2The University of Sussex · 2011
- Wide-dynamic range electrometer with a fast response57US 8,278,909 B2MKS Instruments, Inc. · 2012
- Probe holder for low current measurements43US 6,384,615 B1Cascade Microtech, Inc. · 2002
- Probe holder for testing of a test device39US 6,496,024 B2Cascade Microtech, Inc. · 2002