G01R 31/379
For lead-acid batteries
Official title: for lead-acid batteries
G01R31/379 (For lead-acid batteries) appears on 191 US grants and 154 published applications in this corpus.
Search patents in G01R- Granted patents
- 191
- Published applications
- 154
- Assignees
- 116
- Inventors
- 326
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 2 |
| 2002 | 13 | 11 |
| 2003 | 11 | 10 |
| 2004 | 7 | 19 |
| 2005 | 9 | 8 |
| 2006 | 7 | 10 |
| 2007 | 2 | 5 |
| 2008 | 7 | 3 |
| 2009 | 7 | 5 |
| 2010 | 5 | 5 |
| 2011 | 5 | 0 |
| 2012 | 4 | 1 |
| 2013 | 2 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 2 |
| 2018 | 0 | 4 |
| 2019 | 2 | 18 |
| 2020 | 11 | 4 |
| 2021 | 5 | 6 |
| 2022 | 6 | 8 |
| 2023 | 6 | 8 |
| 2024 | 4 | 14 |
| 2025 | 6 | 8 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Online detection apparatus for storage battery14 Jul 2026US 12,681,096 B2Alibaba (China) Co., Ltd.
- Lead-acid battery monitoring device and lead-acid battery monitoring method17 Mar 2026US 12,578,390 B2GS Yuasa International Ltd.
- Lead-acid battery monitoring apparatus and lead-acid battery monitoring method13 Jan 2026US 12,523,704 B2GS Yuasa International Ltd.
- Method of display control and display controller2 Dec 2025US 12,485,760 B2Toyota Jidosha Kabushiki Kaisha
- Flexible continuous load unit/monitor interface for battery capacity testing2 Dec 2025US 12,489,152 B2Vertiv IT Systems, Inc.
- Smart battery management6 Nov 2025US 2025/0343283 A1CPS Technology Holdings LLC
- Systems and methods for rapid testing of a working electrode11 Sep 2025US 2025/0283945 A1Trojan Battery Company
- Low battery protection method, device, and media28 Aug 2025US 2025/0273973 A1Guangzhou Issyzone Technology Co., Limited
- Intelligent lead-acid battery module and method of operating the same16 Jan 2025US 2025/0023122 A1
- Intelligent lead-acid battery module and method of operating the same16 Jan 2025US 2025/0023123 A1
Most cited
By later US patents
- Battery capacity calculation method1,051US 5,847,566 ASeiko Epson Corporation · 1998
- On-line battery management and monitoring system and method463US 6,031,354 AAIMS Systems, Inc. · 2000
- Battery monitor and method for providing operating parameters299US 5,321,627 AGlobe-Union Inc. · 1994
- Automotive battery status monitor281US 5,281,919 AAlliedSignal Inc. · 1994
- Apparatus and method for measuring battery condition276US 4,697,134 ACommonwealth Edison Company · 1987