H01M 4/57
Of "grey lead", i.e. powders containing lead and lead oxide
Official title: of "grey lead", i.e. powders containing lead and lead oxide
H01M4/57 (Of "grey lead", i.e. powders containing lead and lead oxide) appears on 38 US grants and 41 published applications in this corpus.
Search patents in H01M- Granted patents
- 38
- Published applications
- 41
- Assignees
- 28
- Inventors
- 102
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 4 |
| 2017 | 0 | 2 |
| 2018 | 3 | 1 |
| 2019 | 2 | 5 |
| 2020 | 1 | 3 |
| 2021 | 4 | 2 |
| 2022 | 1 | 4 |
| 2023 | 1 | 2 |
| 2024 | 2 | 2 |
| 2025 | 2 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for direct oxide production29 Sep 2026US 12,747,511 B2Aqua Metals Inc.
- Lead-acid battery3 Mar 2026US 12,567,578 B2GS Yuasa International Ltd.
- Lead-acid battery4 Nov 2025US 12,463,221 B2GS Yuasa International Ltd.
- Lead-based alloy and related processes and products17 Jun 2025US 12,334,556 B2RSR Technologies, Inc.
- Lead-lead oxide-carbon nanocomposite for energy storage cells and method of preparation24 Dec 2024US 12,176,523 B2Uchicago Argonne, LLC
- Control of Lead Acid Paste Transference Through Use of Ultrasonics for Viscosity Regulation11 Dec 2025US 2025/0379204 A1Tbs Engineering Limited
- Lead-based alloy and related processes and products4 Sep 2025US 2025/0279427 A1RSR Technologies, Inc.
- Systems And Methods For Direct Oxide Production6 Mar 2025US 2025/0075357 A1Aqua Metals Inc.
- Positive electrode lead paste for long-life silicon-based bipolar lead battery and preparation method thereof12 Sep 2024US 2024/0304807 A1Anhui Leoch Power Supply Corp
- Lead-based alloy and related processes and products15 Aug 2024US 2024/0274817 A1RSR Technologies, Inc.
Most cited
By later US patents
- Granular material consisting of microporous hollow granules of lead powder12US 4,387,142 A1983
- Long life and low corrosion lead storage battery with a separator including silica and oil12US 8,197,967 B2Panasonic Corporation · 2012
- Lightweight, durable lead-acid batteries10US 8,017,273 B2UT-Battelle, LLC · 2011
- Production of lead powder for tube electrodes8US 4,071,946 AAktiebolaget Tudor · 1978
- Method for enhancing lead oxidation during production of lead acid batteries8US 6,664,003 B2RSR Technologies, Inc. · 2003