C25B 1/22
Inorganic acids
C25B1/22 (Inorganic acids) appears on 139 US grants and 145 published applications in this corpus.
Search patents in C25B- Granted patents
- 139
- Published applications
- 145
- Assignees
- 122
- Inventors
- 465
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 8 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 4 |
| 2006 | 1 | 1 |
| 2007 | 0 | 3 |
| 2008 | 0 | 0 |
| 2009 | 3 | 6 |
| 2010 | 1 | 3 |
| 2011 | 1 | 9 |
| 2012 | 1 | 2 |
| 2013 | 3 | 7 |
| 2014 | 1 | 6 |
| 2015 | 5 | 5 |
| 2016 | 2 | 7 |
| 2017 | 9 | 4 |
| 2018 | 0 | 5 |
| 2019 | 2 | 2 |
| 2020 | 3 | 5 |
| 2021 | 5 | 7 |
| 2022 | 2 | 11 |
| 2023 | 7 | 6 |
| 2024 | 3 | 19 |
| 2025 | 7 | 16 |
| 2026 | 5 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas-less eluent generator6 Oct 2026US 12,753,517 B2Dionex Corporation
- Direct conversion of air to ammonia and nitric acid via advanced manufactured electrochemical reactors19 May 2026US 12,630,932 B2Lawrence Livermore National Security, LLC
- Process to convert reduced sulfur species and water into hydrogen and sulfuric acid28 Apr 2026US 12,612,701 B2California Institute of Technology
- Electrolytic recycling system of waste phosphogypsum and method24 Mar 2026US 12,584,230 B2
- Electrolyte circulation-based sodium hypochlorite generator with automatic electrolytic cell cleaning function10 Mar 2026US 12,571,111 B2Jtechwater Co., Ltd.
- Electrolytic sulfuric acid supply apparatus24 Sep 2026US 2026/0286535 A1SCREEN Holdings Co., Ltd.
- Electrolytic sulfuric acid supply apparatus and water replacement method for electrolytic sulfuric acid supply apparatus24 Sep 2026US 2026/0286536 A1SCREEN Holdings Co., Ltd.
- Method for producing a compound and apparatus for producing a compound27 Aug 2026US 2026/0250131 A1Helander Holding Oy
- 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
- Systems and methods for electrochemical generation of acid and base6 Aug 2026US 2026/0226630 A1Shyp BV Pbc
Most cited
By later US patents
- Electrochemical conversion of anhydrous hydrogen halide to halogen gas using a cation-transporting membrane83US 5,411,641 AE. I. Du Pont de Nemours and Company · 1995
- Electrolysis of alkali metal salts with hydrogen depolarized anodes80US 4,561,945 AUnited Technologies Corporation · 1985
- Apparatus and process for electrochemically decomposing salt solutions to form the relevant base and acid77US 5,595,641 ADeNora Permelec S.p.A. · 1997
- Large capacity acid or base generation apparatus and method of use55US 6,225,129 B1Dionex Corporation · 2001
- Anode useful for electrochemical conversion of anhydrous hydrogen halide to halogen gas45US 5,580,437 AE. I. Du Pont de Nemours and Company · 1996