H01M 4/21
Drying of pasted electrodes
H01M4/21 (Drying of pasted electrodes) appears on 34 US grants and 43 published applications in this corpus.
Search patents in H01M- Granted patents
- 34
- Published applications
- 43
- Assignees
- 33
- Inventors
- 100
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 4 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 2 |
| 2017 | 0 | 4 |
| 2018 | 1 | 1 |
| 2019 | 6 | 2 |
| 2020 | 0 | 1 |
| 2021 | 3 | 2 |
| 2022 | 1 | 2 |
| 2023 | 0 | 2 |
| 2024 | 3 | 3 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Battery paste mixer and method2 Dec 2025US 12,485,395 B2Wirtz Manufacturing Company, Inc.
- Lead-based alloy and related processes and products17 Jun 2025US 12,334,556 B2RSR Technologies, Inc.
- Battery paste mixer and method17 Dec 2024US 12,168,208 B2Wirtz Manufacturing Company, Inc.
- Core-shell particles based on red lead for lead-acid batteries18 Jun 2024US 12,015,144 B2Evonik Operations GmbH
- Lead-based alloy and related processes and products16 Apr 2024US 11,962,008 B2RSR Technologies, Inc.
- Battery paste adhesion process for batteries7 May 2026US 2026/0128279 A1Wirtz Manufacturing Company, Inc.
- Rubber additive in lead acid batteries9 Oct 2025US 2025/0316694 A1Trojan Battery Company
- Lead-based alloy and related processes and products4 Sep 2025US 2025/0279427 A1RSR Technologies, Inc.
- Serviceable Batteries with Reusable Electrodes10 Oct 2024US 2024/0339687 A1QuanVerge Inc.
- Lead-based alloy and related processes and products15 Aug 2024US 2024/0274817 A1RSR Technologies, Inc.
Most cited
By later US patents
- Method for the manufacture of lead-acid batteries and an associated apparatus and associated lead-acid battery40US 4,982,482 ACaltec International, Inc. · 1991
- Formation efficiency of positive plates of a lead-acid battery19US 4,656,706 AGlobe-Union Inc. · 1987
- Lead-acid battery13US 7,083,876 B2Hitachi, Ltd. · 2006
- Electrode for lead acid storage battery13US 9,379,378 B2Johnson Controls Technology Company · 2016
- Method for the manufacture of lead-acid batteries and an associated apparatus and associated lead-acid battery12US 5,276,960 ACaltec International, Inc. · 1994