C25B 1/20
Hydroxides
C25B1/20 (Hydroxides) appears on 52 US grants and 113 published applications in this corpus.
Search patents in C25B- Granted patents
- 52
- Published applications
- 113
- Assignees
- 58
- Inventors
- 212
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 4 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 2 | 1 |
| 2012 | 0 | 7 |
| 2013 | 1 | 4 |
| 2014 | 3 | 3 |
| 2015 | 3 | 4 |
| 2016 | 2 | 6 |
| 2017 | 2 | 2 |
| 2018 | 2 | 1 |
| 2019 | 2 | 2 |
| 2020 | 1 | 3 |
| 2021 | 0 | 7 |
| 2022 | 3 | 8 |
| 2023 | 3 | 14 |
| 2024 | 5 | 17 |
| 2025 | 10 | 19 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multilayered anode in liquid based electrolysis19 May 2026US 12,630,936 B2National Research Council of Canada
- Alkali hydroxide production from alkali sulfate with halogen or carboxylic acid intermediates5 May 2026US 12,618,162 B2Innovator Energy, LLC
- Systems and methods for capturing carbon dioxide and regenerating a capture solution28 Apr 2026US 12,611,629 B2Carbon Engineering ULC
- Decarbonized cement blends14 Apr 2026US 12,600,672 B2Sublime Systems, Inc.
- Electrolytic recycling system of waste phosphogypsum and method24 Mar 2026US 12,584,230 B2
- Method and system for operating an electrochemical reactor8 Oct 2026US 2026/0308790 A1Covestro Deutschland AG
- Alkali hydroxide production from alkali sulfate with halogen or carboxylic acid intermediates13 Aug 2026US 2026/0234812 A1Innovator Energy, LLC
- Mitigating chloride ion oxidation during saline water electrolysis for hydrogen production and carbon dioxide mineralization6 Aug 2026US 2026/0225925 A1The Regents of the University of California
- Electrolysis process for making lithium hydroxide30 Jul 2026US 2026/0218390 A1Stellar Lithium LLC
- Methods and Systems for Electrolytic Upcycling of Sulfate Waste during Resource Extraction for Carbon Dioxide Mineralization9 Jul 2026US 2026/0193802 A1Travertine Technologies, Inc.
Most cited
By later US patents
- Process for the production of high purity lithium hydroxide80US 4,036,713 AFoote Mineral Company · 1977
- Low energy 4-cell electrochemical system with carbon dioxide gas67US 7,875,163 B2Calera Corporation · 2011
- Process for the production of alkaline earth hydroxide44US 6,375,825 B1Chemical Products Corporation · 2002
- CO2 utilization in electrochemical systems36US 8,357,270 B2Calera Corporation · 2013
- Systems and methods for preparation and separation of products26US 9,200,375 B2Calera Corporation · 2015