H01M 4/627
Expanders for lead-acid accumulators
Official title: {Expanders for lead-acid accumulators}
H01M4/627 (Expanders for lead-acid accumulators) appears on 84 US grants and 103 published applications in this corpus.
Search patents in H01M- Granted patents
- 84
- Published applications
- 103
- Assignees
- 61
- Inventors
- 205
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 2 |
| 2003 | 5 | 5 |
| 2004 | 2 | 4 |
| 2005 | 0 | 1 |
| 2006 | 4 | 2 |
| 2007 | 2 | 4 |
| 2008 | 2 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 3 | 1 |
| 2012 | 3 | 10 |
| 2013 | 0 | 2 |
| 2014 | 3 | 5 |
| 2015 | 4 | 5 |
| 2016 | 3 | 5 |
| 2017 | 3 | 4 |
| 2018 | 3 | 8 |
| 2019 | 5 | 5 |
| 2020 | 6 | 5 |
| 2021 | 2 | 4 |
| 2022 | 5 | 8 |
| 2023 | 2 | 7 |
| 2024 | 4 | 5 |
| 2025 | 5 | 4 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lead-acid battery24 Mar 2026US 12,586,821 B2GS Yuasa International Ltd.
- Solid state battery apparatus10 Mar 2026US 12,573,671 B2LG Energy Solution, Ltd.
- Lead-acid battery3 Mar 2026US 12,567,578 B2GS Yuasa International Ltd.
- Carbon fiber electrode with enhanced active material and lead acid battery having same3 Feb 2026US 12,542,283 B2CPS Technology Holdings LLC
- Lead-acid battery4 Nov 2025US 12,463,221 B2GS Yuasa International Ltd.
- Composite comprising conductive polymer and lignosulfonate, and electrode active materials and lead-acid battery comprising the same27 Aug 2026US 2026/0253899 A1Trojan Battery Company
- Solid state battery apparatus21 Aug 2025US 2025/0266507 A1LG Energy Solution, Ltd.
- Negative mass for lead-acid battery electrodes and lead-acid battery including same17 Jul 2025US 2025/0233126 A1
- Tubular gauntlets for deep cycle lead-acid batteries24 Apr 2025US 2025/0132352 A1Johns Manville
- Organic expander for lead storage batteries20 Feb 2025US 2025/0062361 A1Nippon Paper Industries Co., Ltd.
Most cited
By later US patents
- Battery element containing efficiency improving additives49US 6,268,081 B1Ensci, Inc. · 2001
- Optimised energy storage device having capacitor material on lead based negative electrode46US 9,666,860 B2Commonwealth Scientific and Industrial Research Organisation · 2017
- Battery grids and plates and lead-acid batteries made using such grids and plates41US 5,434,025 AGNB Battery Technologies Inc. · 1995
- Battery paste compositions and electrochemical cells for use therewith41US 5,871,862 AOptima Batteries, Inc. · 1999
- High performance energy storage devices39US 7,923,151 B2Commonwealth Scientific and Industrial Research Organisation · 2011