C25B 3/21
Photoelectrolysis
C25B3/21 (Photoelectrolysis) appears on 25 US grants and 49 published applications in this corpus.
Search patents in C25B- Granted patents
- 25
- Published applications
- 49
- Assignees
- 27
- Inventors
- 108
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 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 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 4 |
| 2014 | 2 | 1 |
| 2015 | 1 | 4 |
| 2016 | 0 | 6 |
| 2017 | 3 | 3 |
| 2018 | 3 | 2 |
| 2019 | 2 | 1 |
| 2020 | 2 | 1 |
| 2021 | 2 | 5 |
| 2022 | 3 | 5 |
| 2023 | 1 | 6 |
| 2024 | 1 | 4 |
| 2025 | 3 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Porous nanoparticle catalyst for methane conversion and method of preparing the same18 Aug 2026US 12,709,812 B2Sogang University Research & Business Development Foundation
- Light-driven fuel cell, cathode catalyst for same, anode catalyst for same, and methanol production method comprising converting methane into methanol18 Nov 2025US 12,473,657 B2Japan Science and Technology Agency
- Photovoltaic-electrochemical (PV-EC) system14 Oct 2025US 12,442,095 B2Repsol, S. A.
- Carbon dioxide gas-phase reduction device and carbon dioxide gas-phase reduction method20 May 2025US 12,305,301 B2Nippon Telegraph and Telephone Corporation
- CO2 reduction toward methane28 May 2024US 11,993,857 B2The Regents of the University of Michigan
- Materials, panels and uses thereof8 Oct 2026US 2026/0308784 A1B. G. Negev Technologies and Applications Ltd., At Ben-Gurion University
- Electrolyte Membrane and Manufacturing Method of Electrolyte Membrane27 Aug 2026US 2026/0250868 A1Nippon Telegraph and Telephone Corporation
- Carbon Dioxide Reduction Device9 Jul 2026US 2026/0193794 A1NTT, Inc.
- Engineering of a Photoautotrophic Cell for CO2 Fixation18 Jun 2026US 2026/0168116 A1Oxford University Innovation Limited
- Reduction Electrode and Manufacturing Method of Reduction Electrode30 Oct 2025US 2025/0333861 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Photoelectrochemical reduction of carbon oxides105US 5,022,970 AGas Research Institute · 1991
- Nanostructured photocatalysts and doped wide-bandgap semiconductors5US 9,873,115 B2The Regents of the University of Colorado, a body corporate · 2018
- Method for reducing carbon dioxide4US 8,709,228 B2Panasonic Corporation · 2014
- Method for reducing carbon dioxide3US 8,709,227 B2Panasonic Corporation · 2014
- Electrochemical and photoelectrochemical oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and 2,5-diformylfuran3US 9,598,780 B2Wisconsin Alumni Research Foundation · 2017