C01G 51/00
Compounds of cobalt
C01G51/00 (Compounds of cobalt) appears on 1,470 US grants and 1,696 published applications in this corpus.
Search patents in C01G- Granted patents
- 1,470
- Published applications
- 1,696
- Assignees
- 733
- Inventors
- 3,707
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 9 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 12 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 16 | 0 |
| 1984 | 11 | 0 |
| 1985 | 16 | 0 |
| 1986 | 19 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 20 | 0 |
| 1998 | 18 | 0 |
| 1999 | 19 | 0 |
| 2000 | 25 | 0 |
| 2001 | 21 | 13 |
| 2002 | 20 | 26 |
| 2003 | 24 | 38 |
| 2004 | 25 | 44 |
| 2005 | 15 | 43 |
| 2006 | 25 | 54 |
| 2007 | 19 | 45 |
| 2008 | 31 | 51 |
| 2009 | 32 | 75 |
| 2010 | 50 | 63 |
| 2011 | 43 | 78 |
| 2012 | 42 | 84 |
| 2013 | 66 | 81 |
| 2014 | 60 | 67 |
| 2015 | 57 | 68 |
| 2016 | 56 | 79 |
| 2017 | 58 | 68 |
| 2018 | 57 | 82 |
| 2019 | 70 | 74 |
| 2020 | 71 | 101 |
| 2021 | 60 | 86 |
| 2022 | 67 | 93 |
| 2023 | 70 | 95 |
| 2024 | 63 | 72 |
| 2025 | 61 | 75 |
| 2026 | 42 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C01G 51/40Complex oxides containing cobalt and at least one other metal element1,015
- C01G 51/80Compounds containing cobalt, with or without oxygen or hydrogen, and containing one137
- C01G 51/04Oxides129
- C01G 51/01Preparation or separation involving a liquid-liquid extraction, an adsorption or an ion-exchange95
- C01G 51/05Hydroxides82
- C01G 51/10Sulfates33
- C01G 51/15Sulfides32
- C01G 51/20Complexes with ammonia30
All 11 subgroupsShow fewer
Recent patents
- Dispersed iron oxide magnetic powder slurry and method for producing same6 Oct 2026US 12,753,089 B2Dowa Electronics Materials Co., Ltd.
- Multifferoic R-type hexaferrite, a composite and an article comprising the R-type hexaferrite, and a method of making the same22 Sep 2026US 12,744,140 B2Rogers Corporation
- Preparation method of platy aluminum-doped cobalt carbonate and use thereof15 Sep 2026US 12,735,330 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Method for surface modification of lithium transition metal oxide positive electrode material15 Sep 2026US 12,738,484 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Lithium transition metal oxide, positive electrode additive for lithium secondary battery, and lithium secondary battery comprising the same8 Sep 2026US 12,729,134 B2LG Chem.Ltd.
- Electrode, solid oxide cell including the same, and method of preparing solid oxide cell1 Oct 2026US 2026/0296913 A1Samsung Electro-Mechanics Co., Ltd.
- Methods for carbon capture and metal recovery and related systems24 Sep 2026US 2026/0284595 A1Battelle Energy Alliance, LLC
- Mixed ferrite nanoparticles and uses thereof27 Aug 2026US 2026/0250149 A1Institut National De La Recherche Scientifique
- Ceramic reversible cell, and steam electrolysis cell, fuel cell and ammonia-producing co-electrolysis cell each including the same20 Aug 2026US 2026/0242958 A1National University Corporation Hokkaido University
- Processes for preparing hydroxides and oxides of various metals and derivatives thereof13 Aug 2026US 2026/0234024 A1Nemaska Lithium Inc.
Most cited
By later US patents
- Combinatorial synthesis of novel materials365US 5,985,356 ASymyx Technologies, Inc. · 1999
- Giant magnetoresistive cobalt oxide compounds218US 5,776,359 ASymyx Technologies, Inc. · 1998
- Combinatorial synthesis of novel materials210US 6,004,617 ASymyx Technologies, Inc. · 1999
- Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions202US 5,306,411 AThe Standard Oil Company · 1994
- Electroactive material for secondary batteries and methods of preparation146US 6,599,662 B1Massachusetts Institute of Technology · 2003