G01R 31/3646
For indicating electrical conditions or variables
Official title: {for indicating electrical conditions or variables, e.g. visual or audible indicators}
G01R31/3646 (For indicating electrical conditions or variables) appears on 447 US grants and 534 published applications in this corpus.
Search patents in G01R- Granted patents
- 447
- Published applications
- 534
- Assignees
- 336
- Inventors
- 1,403
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 8 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 0 | 7 |
| 2005 | 5 | 5 |
| 2006 | 4 | 7 |
| 2007 | 1 | 5 |
| 2008 | 1 | 8 |
| 2009 | 3 | 11 |
| 2010 | 3 | 13 |
| 2011 | 6 | 12 |
| 2012 | 9 | 18 |
| 2013 | 14 | 8 |
| 2014 | 7 | 17 |
| 2015 | 15 | 21 |
| 2016 | 13 | 21 |
| 2017 | 17 | 28 |
| 2018 | 21 | 31 |
| 2019 | 27 | 39 |
| 2020 | 28 | 39 |
| 2021 | 26 | 28 |
| 2022 | 40 | 34 |
| 2023 | 26 | 46 |
| 2024 | 33 | 37 |
| 2025 | 39 | 57 |
| 2026 | 16 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for predicting behavior of secondary battery on basis of parameter measurement22 Sep 2026US 12,742,824 B2Korea Electrotechnology Research Institute
- Circuit, method, and oximeter for indicating power supply by applying double-color light-emitting diode22 Sep 2026US 12,744,400 B2Guangdong Genial Technology Co., Ltd.
- Optimizations for an electric utility vehicle15 Sep 2026US 12,734,889 B2Altec Industries, Inc.
- Diagnosing and locating battery pack failures25 Aug 2026US 12,715,338 B2GM Global Technology Operations LLC
- Power display method and apparatus, and electronic device28 Jul 2026US 12,693,335 B2Vivo Mobile Communication Co., Ltd.
- State-of-charge indicator8 Oct 2026US 2026/0309792 A1LAT Enterprises, Inc., d/b/a MediPak Energy Systems
- Method and apparatus for diagnosing battery pack safety of an electric vehicle1 Oct 2026US 2026/0299029 A1Hyundai Motor Company
- Battery Diagnosis Apparatus and Operating Method Thereof1 Oct 2026US 2026/0299043 A1LG Energy Solution, Ltd.
- Battery diagnostic apparatus, battery diagnostic method, and battery diagnostic system10 Sep 2026US 2026/0266920 A1Hyundai Motor Company
- Methods of Operating Electrochemical Storage Devices Based on Anomaly Clustering, and Software and Systems Including Same3 Sep 2026US 2026/0259270 A1SES Holdings Pte. Ltd.
Most cited
By later US patents
- Rechargeable light curing apparatus1,066US 5,471,129 AIvoclar AG · 1995
- State of charge indicator for a battery charger837US 8,796,995 B2Black & Decker Inc. · 2014
- Battery management apparatus for portable electronic devices323US 6,169,387 ALifecor, Inc. · 2001
- Battery gauge for a battery operated infusion pump296US 5,764,034 ABaxter International Inc. · 1998
- Battery monitoring apparatus and method for programmers of cardiac stimulating devices271US 6,108,579 APacesetter, Inc. · 2000