H01M 4/14
Electrodes for lead-acid accumulators
H01M4/14 (Electrodes for lead-acid accumulators) appears on 606 US grants and 607 published applications in this corpus.
Search patents in H01M- Granted patents
- 606
- Published applications
- 607
- Assignees
- 291
- Inventors
- 1,192
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 12 | 0 |
| 1978 | 15 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 11 | 0 |
| 1982 | 13 | 0 |
| 1983 | 5 | 0 |
| 1984 | 8 | 0 |
| 1985 | 12 | 0 |
| 1986 | 10 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 10 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 13 | 0 |
| 1995 | 6 | 0 |
| 1996 | 11 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 5 |
| 2002 | 9 | 8 |
| 2003 | 13 | 17 |
| 2004 | 5 | 14 |
| 2005 | 6 | 14 |
| 2006 | 9 | 13 |
| 2007 | 2 | 9 |
| 2008 | 5 | 16 |
| 2009 | 11 | 15 |
| 2010 | 3 | 16 |
| 2011 | 9 | 19 |
| 2012 | 12 | 31 |
| 2013 | 8 | 31 |
| 2014 | 10 | 32 |
| 2015 | 17 | 35 |
| 2016 | 25 | 34 |
| 2017 | 24 | 30 |
| 2018 | 28 | 40 |
| 2019 | 37 | 23 |
| 2020 | 20 | 28 |
| 2021 | 17 | 24 |
| 2022 | 25 | 32 |
| 2023 | 18 | 50 |
| 2024 | 24 | 37 |
| 2025 | 18 | 15 |
| 2026 | 13 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lead sulfate film removing apparatus, method, and system6 Oct 2026US 12,755,956 B2Alpha Bright Company Limited
- Graphite and dispersant additives for battery paste compositions6 Oct 2026US 12,755,968 B2The Curators of the University of Missouri
- Conductive sheet application process and conductive sheet assembly15 Sep 2026US 12,734,602 B2East Penn Manufacturing Co.
- Battery grid feeder for a pasting machine7 Jul 2026US 12,676,332 B2Wirtz Manufacturing Company, Inc.
- Method of forming a composition and the composition formed therefrom12 May 2026US 12,626,905 B2
- Metal-carbon nanofiber composite electrodes for high performance lithium-ion and lead-acid batteries8 Oct 2026US 2026/0311992 A1The Curators of the University of Missouri
- Temperature control in battery paste application hopper assembly24 Sep 2026US 2026/0285604 A1Wirtz Manufacturing Company, Inc.
- Method of forming a composition and the composition formed therefrom17 Sep 2026US 2026/0279766 A1Teebs R&D, LLC
- Composite comprising conductive polymer and lignosulfonate, and electrode active materials and lead-acid battery comprising the same27 Aug 2026US 2026/0253899 A1Trojan Battery Company
- Battery Paste Mixer and Method13 Aug 2026US 2026/0233177 A1Wirtz Manufacturing Company, Inc.
Most cited
By later US patents
- Sealed lead-acid cell and method67US 4,606,982 AGates Energy Products, Inc. · 1986
- Lead acid bipolar battery plate and method of making the same66US 4,900,643 AGlobe-Union Inc. · 1990
- Battery plate containing filler with conductive coating64US 4,510,219 ACalifornia Institute of Technology · 1985
- Carbon materials comprising enhanced electrochemical properties57US 9,269,502 B2BASF SE · 2016
- Battery grid pasting machine55US 4,606,383 AWirtz Manufacturing Company, Inc. · 1986