G01R 35/04
Testing or calibrating of apparatus covered by the other groups of this
Official title: of instruments for measuring time integral of power or current
G01R35/04 (Testing or calibrating of apparatus covered by the other groups of this) appears on 232 US grants and 194 published applications in this corpus.
Search patents in G01R- Granted patents
- 232
- Published applications
- 194
- Assignees
- 142
- Inventors
- 430
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 6 |
| 2004 | 8 | 3 |
| 2005 | 5 | 4 |
| 2006 | 2 | 6 |
| 2007 | 7 | 4 |
| 2008 | 0 | 7 |
| 2009 | 5 | 3 |
| 2010 | 6 | 8 |
| 2011 | 4 | 4 |
| 2012 | 0 | 11 |
| 2013 | 5 | 7 |
| 2014 | 11 | 12 |
| 2015 | 7 | 9 |
| 2016 | 10 | 11 |
| 2017 | 10 | 12 |
| 2018 | 16 | 9 |
| 2019 | 13 | 17 |
| 2020 | 14 | 9 |
| 2021 | 13 | 10 |
| 2022 | 10 | 6 |
| 2023 | 6 | 11 |
| 2024 | 12 | 7 |
| 2025 | 6 | 8 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Load-side voltage sensing in a power meter28 Jul 2026US 12,693,319 B2Itron, Inc.
- Wireless electrical sensor and electrical parameter measurement and calculation apparatus, method and system14 Jul 2026US 12,681,061 B2Accupower Electronic Technologies Co., Ltd. of Taiyuan
- System and method for calibration of energy meters using phase angle corrections9 Jun 2026US 12,650,484 B2Accuenergy (Canada) Inc.
- Method for controlling terminal device, storage medium, general meter device and electric meter system21 Apr 2026US 12,607,483 B2Autel Digital Power Co., Ltd.
- Random transient power test signal generator based on three-dimensional memristive discrete map21 Apr 2026US 12,607,700 B2University of Electronic Science and Technology of China
- Power supply system and moving object1 Oct 2026US 2026/0299073 A1Honda Motor Co., Ltd.
- System and method of validating readings of an energy meter24 Sep 2026US 2026/0287701 A1Honeywell International Inc.
- Sensor device and method for non-invasive monitoring of energy consumption usage17 Sep 2026US 2026/0276683 A1
- Adaptive compensation method for self-heating error in electricity meters based on multi-stage characteristics13 Aug 2026US 2026/0235651 A1Accuenergy (Canada) Inc.
- Adapter for use in testing an energy meter30 Jul 2026US 2026/0219351 A1Landis+Gyr Technology, Inc.
Most cited
By later US patents
- Computerized solid state energy meter test system and method of testing201US 6,262,569 B1Utility Test Equipment Company · 2001
- Computer controlled energy monitoring system145US 4,415,896 AAdec, Inc. · 1983
- Electronic metering device including automatic service sensing130US 5,631,554 ASchlumberger Industries · 1997
- Apparatus for metering electrical power and electronically communicating electrical power information130US 6,504,357 B1ABB Automation Inc. · 2003
- Power meter having an auto-calibration feature and data acquisition capabilities129US 6,735,535 B1Electro Industries/Gauge Tech · 2004