G01R 31/387
Determining ampere-hour charge capacity or soc
Official title: Determining ampere-hour charge capacity or SoC
G01R31/387 (Determining ampere-hour charge capacity or soc) appears on 711 US grants and 1,151 published applications in this corpus.
Search patents in G01R- Granted patents
- 711
- Published applications
- 1,151
- Assignees
- 476
- Inventors
- 2,457
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 4 |
| 2003 | 7 | 10 |
| 2004 | 7 | 3 |
| 2005 | 1 | 6 |
| 2006 | 1 | 1 |
| 2007 | 4 | 2 |
| 2008 | 2 | 4 |
| 2009 | 4 | 5 |
| 2010 | 3 | 3 |
| 2011 | 0 | 3 |
| 2012 | 5 | 15 |
| 2013 | 6 | 21 |
| 2014 | 7 | 23 |
| 2015 | 18 | 31 |
| 2016 | 13 | 28 |
| 2017 | 20 | 33 |
| 2018 | 23 | 43 |
| 2019 | 42 | 78 |
| 2020 | 66 | 74 |
| 2021 | 51 | 95 |
| 2022 | 89 | 108 |
| 2023 | 82 | 133 |
| 2024 | 62 | 149 |
| 2025 | 99 | 165 |
| 2026 | 81 | 114 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Charge/discharge inspection device and charge/discharge inspection equipment6 Oct 2026US 12,754,239 B2Nippon Steel Texeng. Co., Ltd.
- Method and apparatus with battery parameters determination6 Oct 2026US 12,754,243 B2Samsung Electronics Co., Ltd.
- State-of-charge estimator for lithium-ion battery using hysteresis model6 Oct 2026US 12,754,244 B2GM Global Technology Operations LLC
- Battery analyzer and method of use6 Oct 2026US 12,756,023 B2Flyzre LLC
- Battery storage maintenance29 Sep 2026US 12,748,157 B2Lenovo (United States) Inc.
- State-of-charge indicator8 Oct 2026US 2026/0309792 A1LAT Enterprises, Inc., d/b/a MediPak Energy Systems
- Battery testing apparatus and operating method thereof1 Oct 2026US 2026/0298875 A1LG Energy Solution, Ltd.
- Charge Protocol Inspection Apparatus and Operating Method Thereof1 Oct 2026US 2026/0299040 A1LG Energy Solution, Ltd.
- Battery diagnostic device and method thereof1 Oct 2026US 2026/0299046 A1Samsung SDI.Co., Ltd.
- Wireless battery management system and operating method therefor1 Oct 2026US 2026/0302387 A1Hyundai Motor Company
Most cited
By later US patents
- Temperature responsive battery tester179US 5,825,174 A1998
- Electronic battery tester156US 6,359,441 B1Midtronics, Inc. · 2002
- Electronic battery tester144US 6,556,019 B2Midtronics, Inc. · 2003
- Handheld tester for starting/charging systems139US 6,570,385 B1Actron Manufacturing Company · 2003
- Handheld tester for starting/charging systems129US 6,777,945 B2Actron Manufacturing Company · 2004