C01G 21/10
Red lead [pb3o4]
Official title: Red lead [Pb3O4]
C01G21/10 (Red lead [pb3o4]) appears on 9 US grants and 7 published applications in this corpus.
Search patents in C01G- Granted patents
- 9
- Published applications
- 7
- Assignees
- 10
- Inventors
- 30
- Latest grant
- 22 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nanocrystals22 Jul 2025US 12,365,599 B2Quantum Science Ltd
- Core-shell particles based on red lead for lead-acid batteries18 Jun 2024US 12,015,144 B2Evonik Operations GmbH
- Recovery of high purity lead oxide from lead acid battery paste6 May 2014US 8,715,615 B2Retriev Technologies Incorporated
- Recovery of high purity lead oxide from lead acid battery paste4 Dec 2012US 8,323,595 B1Toxco, Inc.
- Process for recovering lead oxides from exhausted batteries24 Mar 2009US 7,507,496 B1Kinsbursky Brothers Inc
- Lead oxides, compositions comprising lead oxides and methods of making lead oxides26 Feb 2026US 2026/0055004 A1
- Nanocrystals12 Jun 2025US 2025/0187939 A1Quantum Science Ltd
- Core-shell particles based on red lead for lead-acid batteries29 Sep 2022US 2022/0310987 A1Evonik Operations GmbH
- Nanocrystals2 Jun 2022US 2022/0169527 A1Quantum Science Ltd
- Active materials for lead acid battery22 Oct 2015US 2015/0298987 A1
Most cited
By later US patents
- Process for recovering lead oxides from exhausted batteries33US 7,507,496 B1Kinsbursky Brothers Inc · 2009
- Recovery of high purity lead oxide from lead acid battery paste26US 8,323,595 B1Toxco, Inc. · 2012
- Apparatus and method for the production of oxides of lead4US 4,912,301 AOxide & Chemical Corporation · 1990
- Method for making highly oxidized lead powder used for a lead storage battery3US 5,540,915 AMatsushita Electric Industrial Co., Ltd. · 1996
- Recovery of high purity lead oxide from lead acid battery paste2US 8,715,615 B2Retriev Technologies Incorporated · 2014