C01D 1/04
Hydroxides
C01D1/04 (Hydroxides) appears on 238 US grants and 185 published applications in this corpus.
Search patents in C01D- Granted patents
- 238
- Published applications
- 185
- Assignees
- 209
- Inventors
- 594
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 8 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 0 |
| 2002 | 1 | 3 |
| 2003 | 3 | 3 |
| 2004 | 3 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 3 |
| 2007 | 3 | 0 |
| 2008 | 3 | 5 |
| 2009 | 2 | 1 |
| 2010 | 0 | 8 |
| 2011 | 3 | 4 |
| 2012 | 6 | 5 |
| 2013 | 2 | 3 |
| 2014 | 5 | 4 |
| 2015 | 5 | 8 |
| 2016 | 3 | 9 |
| 2017 | 6 | 14 |
| 2018 | 7 | 9 |
| 2019 | 9 | 8 |
| 2020 | 6 | 10 |
| 2021 | 9 | 9 |
| 2022 | 11 | 8 |
| 2023 | 5 | 16 |
| 2024 | 4 | 14 |
| 2025 | 7 | 23 |
| 2026 | 7 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Processes for producing alkali hydroxides or alkali sulfites using large molecular weight acid intermediates6 Oct 2026US 12,753,082 B2Innovator Energy, LLC
- Peroxide stabilizers11 Aug 2026US 12,703,630 B2Diversey, Inc.
- Process for recovering and purifying lithium11 Aug 2026US 12,703,896 B2Fortum Battery Recycling Oy
- Processes for preparing hydroxides and oxides of various metals and derivatives thereof21 Apr 2026US 12,606,456 B2Nemaska Lithium Inc.
- DHSV scale removal method in the production string17 Mar 2026US 12,577,118 B2Petroleo Brasileiro S.A. - Petrobras
- High-efficiency method for producing lithium hydroxide from lithium carbonate through process improvement1 Oct 2026US 2026/0296907 A1Korea Institute of Geoscience and Mineral Resources
- Method for manufacturing lithium hydroxide20 Aug 2026US 2026/0242229 A1Idemitsu Kosan Co., Ltd.
- Plant and process for producing a solid-state alkali metal cyanide product containing alkali metal hydroxide13 Aug 2026US 2026/0234013 A1CyPlus GmbH
- Processes for preparing hydroxides and oxides of various metals and derivatives thereof13 Aug 2026US 2026/0234024 A1Nemaska Lithium Inc.
- Method for manufacturing lithium hydroxide6 Aug 2026US 2026/0225905 A1Kemco
Most cited
By later US patents
- Bipolar membranes and method of making same111US 4,116,889 AAllied Chemical Corporation · 1978
- Apparatus and process for electrodialysis of salts67US 6,221,225 B1Archer Daniels Midland Company · 2001
- Low energy 4-cell electrochemical system with carbon dioxide gas67US 7,875,163 B2Calera Corporation · 2011
- Electrodialytic process for the conversion of impure soda values to sodium hydroxide and carbon dioxide50US 4,238,305 AAllied Chemical Corporation · 1980
- Electrodialytic water splitting process for gaseous products43US 4,592,817 AAllied Corporation · 1986