C01G 53/05
Hydroxides
Official title: Hydroxides; Oxyhydroxides
C01G53/05 (Hydroxides) appears on 125 US grants and 199 published applications in this corpus.
Search patents in C01G- Granted patents
- 125
- Published applications
- 199
- Assignees
- 142
- Inventors
- 634
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 3 |
| 2002 | 5 | 3 |
| 2003 | 5 | 5 |
| 2004 | 2 | 5 |
| 2005 | 2 | 4 |
| 2006 | 3 | 4 |
| 2007 | 2 | 7 |
| 2008 | 2 | 11 |
| 2009 | 3 | 8 |
| 2010 | 6 | 5 |
| 2011 | 5 | 5 |
| 2012 | 4 | 3 |
| 2013 | 3 | 1 |
| 2014 | 3 | 4 |
| 2015 | 0 | 2 |
| 2016 | 5 | 3 |
| 2017 | 2 | 6 |
| 2018 | 4 | 2 |
| 2019 | 4 | 1 |
| 2020 | 3 | 7 |
| 2021 | 1 | 5 |
| 2022 | 5 | 9 |
| 2023 | 3 | 12 |
| 2024 | 9 | 19 |
| 2025 | 8 | 30 |
| 2026 | 6 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrometallurgical recovery method for nickel sulfate26 May 2026US 12,637,736 B2Ecopro Materials Co., Ltd.
- Single crystal multi-element cathode material, preparation method of the same, and lithium-ion battery19 May 2026US 12,633,527 B2Beijing Easpring Material Technology Co., Ltd.
- Multi-element cathode material, preparation method thereof, positive electrode plate, and lithium-ion battery5 May 2026US 12,620,591 B2Beijing Easpring Material Technology Co., Ltd.
- Method for producing nickel particles, method for producing nickel sulfate, and method for producing positive electrode active material for secondary batteries17 Mar 2026US 12,577,126 B2Panasonic Intellectual Property Management Co., Ltd.
- Method for producing mixed metal solution and method for producing mixed metal salt27 Jan 2026US 12,534,776 B2Jx Metals Circular Solutions Co., Ltd.
- Metal hydroxide particles and positive electrode active material8 Oct 2026US 2026/0308012 A1Toyota Jidosha Kabushiki Kaisha
- Metal composite compound and method for producing lithium metal composite oxide27 Aug 2026US 2026/0250154 A1Tanaka Chemical Corporation
- Positive electrode active material for lithium secondary battery, positive electrode for lithium secondary battery, and lithium secondary battery20 Aug 2026US 2026/0245885 A1Sumitomo Metal Mining Co., Ltd.
- Process for extracting metals from lithium-ion batteries13 Aug 2026US 2026/0234749 A1Arabat S.R.L.
- Cathode active material for lithium secondary battery, preparation method therefor, and lithium secondary battery comprising same6 Aug 2026US 2026/0229505 A1Posco Future M Co., Ltd.
Most cited
By later US patents
- Nanostructured oxides and hydroxides and methods of synthesis therefor70US 6,162,530 AUniversity of Connecticut · 2000
- Battery-grade nickel hydroxide and method for its preparation53US 5,788,943 AThe Hall Chemical Company · 1998
- Methods of synthesis for nanostructured oxides and hydroxides39US 6,517,802 B1Rutgers, The State University of New Jersey · 2003
- Method for producing fine spherical particles of carbonate or hydroxide of nickel, cobalt or copper37US 6,197,273 B1Sakai Chemical Industry Co., Ltd. · 2001
- Metal recovery from hydroconverted heavy effluent32US 8,636,967 B2Intevep, S. A. · 2014