C25B 3/25
Reduction
C25B3/25 (Reduction) appears on 782 US grants and 1,245 published applications in this corpus.
Search patents in C25B- Granted patents
- 782
- Published applications
- 1,245
- Assignees
- 510
- Inventors
- 2,351
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 11 | 0 |
| 1978 | 8 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 10 | 0 |
| 1984 | 10 | 0 |
| 1985 | 13 | 0 |
| 1986 | 17 | 0 |
| 1987 | 12 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 14 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 8 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 1 |
| 2002 | 5 | 2 |
| 2003 | 1 | 4 |
| 2004 | 2 | 4 |
| 2005 | 2 | 3 |
| 2006 | 0 | 4 |
| 2007 | 0 | 5 |
| 2008 | 2 | 11 |
| 2009 | 3 | 9 |
| 2010 | 4 | 6 |
| 2011 | 8 | 18 |
| 2012 | 7 | 27 |
| 2013 | 14 | 54 |
| 2014 | 20 | 46 |
| 2015 | 26 | 40 |
| 2016 | 26 | 60 |
| 2017 | 20 | 49 |
| 2018 | 33 | 59 |
| 2019 | 40 | 73 |
| 2020 | 51 | 68 |
| 2021 | 52 | 76 |
| 2022 | 48 | 101 |
| 2023 | 56 | 105 |
| 2024 | 59 | 172 |
| 2025 | 73 | 136 |
| 2026 | 44 | 112 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-cell COx electrolyzer stacks29 Sep 2026US 12,747,510 B2Twelve Benefit Corporation
- Device and method for carbon dioxide electrolysis or carbon monoxide electrolysis22 Sep 2026US 12,742,248 B2Siemens Energy Global GmbH & Co. KG
- Catalyst structure for electrochemical CO2 reduction, and method for producing same25 Aug 2026US 12,716,137 B2Seoul National University R&Db Foundation
- Electrochemical conversion of carbon dioxide to form an organic acid18 Aug 2026US 12,709,811 B2Uop LLC
- Porous nanoparticle catalyst for methane conversion and method of preparing the same18 Aug 2026US 12,709,812 B2Sogang University Research & Business Development Foundation
- Re-activation process of gas diffusion electrode8 Oct 2026US 2026/0308788 A1Vito NV
- Systems and methods for converting co2 to one or more multicarbon products1 Oct 2026US 2026/0297765 A1Rensselaer Polytechnic Institute
- Carbon dioxide absorbent and carbon dioxide separation device24 Sep 2026US 2026/0284584 A1Kabushiki Kaisha Toshiba
- Electrochemical reduction of co2 emissions to a green reduction product and its salts24 Sep 2026US 2026/0286539 A1Saudi Arabian Oil Company
- Electrolyte Solution for Reversible CO2 Capture and Electrochemical Conversion24 Sep 2026US 2026/0286540 A1UNM Rainforest Innovations
Most cited
By later US patents
- Electrochemical hydrogenation of nicotinamide adenine dinucleotide401US 4,526,661 ABASF SE · 1985
- Gas fixation solar cell using gas diffusion semiconductor electrode151US 4,240,882 AInstitute of Gas Technology · 1980
- Recycling of carbon dioxide into methyl alcohol and related oxygenates for hydrocarbons143US 5,928,806 A1999
- Electrolytic synthesis of methanol from CO.sub.2110US 3,959,094 AThe United States of America as represented by the United States Energy Research and Development Administration · 1976
- Means and method for reducing carbon dioxide to a product109US 4,673,473 A1987