G01R 19/22
Arrangements for measuring currents or voltages or for indicating presence or sign
Official title: using conversion of AC into DC
G01R19/22 (Arrangements for measuring currents or voltages or for indicating presence or sign) appears on 189 US grants and 119 published applications in this corpus.
Search patents in G01R- Granted patents
- 189
- Published applications
- 119
- Assignees
- 157
- Inventors
- 367
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 9 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 5 | 2 |
| 2004 | 0 | 1 |
| 2005 | 3 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 2 | 0 |
| 2010 | 2 | 3 |
| 2011 | 0 | 1 |
| 2012 | 0 | 4 |
| 2013 | 6 | 6 |
| 2014 | 3 | 8 |
| 2015 | 7 | 8 |
| 2016 | 6 | 8 |
| 2017 | 7 | 6 |
| 2018 | 3 | 4 |
| 2019 | 5 | 7 |
| 2020 | 5 | 6 |
| 2021 | 6 | 19 |
| 2022 | 8 | 8 |
| 2023 | 14 | 5 |
| 2024 | 5 | 6 |
| 2025 | 3 | 5 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cordless vacuum cleaner adopting overheating protection method15 Sep 2026US 12,733,784 B2Samsung Electronics Co., Ltd.
- Device and method for measuring leakage current18 Aug 2026US 12,710,456 B2Hitachi Energy Ltd
- Transformer turns number testing circuit16 Jun 2026US 12,656,385 B2Sumida Corporation
- Power supply control systems and methods26 May 2026US 12,640,411 B2AVL Mobility Technologies, Inc.
- Sigma-delta modulator with residue converter for low-offset measurement system12 May 2026US 12,627,314 B2Cirrus Logic, Inc.
- Measuring and calibrating the characteristic coefficient of a root mean square (rms) power detector20 Aug 2026US 2026/0243810 A1STMicroelectronics International N. V.
- Current sense circuitry6 Aug 2026US 2026/0227430 A1
- Power detector16 Jul 2026US 2026/0202450 A1Fujikura Ltd.
- Circuit Arrangement for Measuring Current18 Jun 2026US 2026/0169035 A1Siemens Aktiengesellschaft
- Apparatus, system and method for measuring high voltage on high-voltage node18 Jun 2026US 2026/0169038 A1Hitachi Energy Ltd
Most cited
By later US patents
- Power line takeoff clamp assembly222US 8,536,857 B2Tollgrade Communications, Inc. · 2013
- Temperature responsive battery tester179US 5,825,174 A1998
- Multi-layer female component for refastenable fastening device and method of making the same128US 5,407,439 AThe Procter & Gamble Company · 1995
- Switched-capacitor circuit having a full-wave-rectifying and integrating function91US 5,142,236 AMarelli Autronica S.p.A. · 1992
- Multi-layer female component for refastenable fastening device and method of making the same87US 5,569,233 AThe Procter & Gamble Company · 1996