H01M 4/73
For lead-acid accumulators
Official title: for lead-acid accumulators, e.g. frame plates
H01M4/73 (For lead-acid accumulators) appears on 259 US grants and 285 published applications in this corpus.
Search patents in H01M- Granted patents
- 259
- Published applications
- 285
- Assignees
- 133
- Inventors
- 547
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 9 | 2 |
| 2002 | 2 | 8 |
| 2003 | 7 | 8 |
| 2004 | 3 | 3 |
| 2005 | 5 | 8 |
| 2006 | 1 | 5 |
| 2007 | 0 | 5 |
| 2008 | 2 | 6 |
| 2009 | 3 | 10 |
| 2010 | 6 | 13 |
| 2011 | 6 | 17 |
| 2012 | 8 | 18 |
| 2013 | 11 | 15 |
| 2014 | 7 | 12 |
| 2015 | 13 | 16 |
| 2016 | 12 | 13 |
| 2017 | 13 | 13 |
| 2018 | 6 | 15 |
| 2019 | 12 | 13 |
| 2020 | 13 | 17 |
| 2021 | 11 | 11 |
| 2022 | 10 | 9 |
| 2023 | 9 | 12 |
| 2024 | 10 | 19 |
| 2025 | 6 | 11 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Carbon fiber electrode with enhanced active material and lead acid battery having same3 Feb 2026US 12,542,283 B2CPS Technology Holdings LLC
- Liquid-type lead storage battery4 Nov 2025US 12,463,257 B2The Furukawa Battery Co., Ltd.
- Battery grid21 Oct 2025US 12,451,493 B2CPS Technology Holdings LLC
- Lead acid battery separators, warp resistant separators, batteries, systems, and related methods19 Aug 2025US 12,394,867 B2Daramic, LLC
- Lead-based alloy and related processes and products17 Jun 2025US 12,334,556 B2RSR Technologies, Inc.
- Laser cutting metal battery components for battery manufacture11 Jun 2026US 2026/0158544 A1Wirtz Manufacturing Company, Inc.
- Lead Acid Battery Separators, Warp Resistant Separators, Batteries, Systems, and Related Methods14 May 2026US 2026/0135255 A1Daramic, LLC
- Battery paste adhesion process for batteries7 May 2026US 2026/0128279 A1Wirtz Manufacturing Company, Inc.
- Lead-acid battery and manufacture method7 May 2026US 2026/0128387 A1Arcactive Limited
- Making metal battery grids for lead-acid battery manufacture with laser cleaning and assembly therefor26 Mar 2026US 2026/0088278 A1Wirtz Manufacturing Company, Inc.
Most cited
By later US patents
- Multi-layered battery grids and methods of forming battery grids65US 5,580,685 AVenture Enterprises, Incorporated · 1996
- Pasted type lead-acid battery54US 4,336,314 AJapan Storage Battery Co., Ltd. · 1982
- Recombinant lead-acid cell and long life battery50US 5,851,695 AC&D Technologies, Inc. · 1998
- Offset perforated lead-acid battery grid47US 4,151,331 AThe Gates Rubber Company · 1979
- Radial grids for lead acid batteries47US 4,221,852 AESB International Corp. · 1980