C25B 11/03
Perforated or foraminous
Official title: perforated or foraminous
C25B11/03 (Perforated or foraminous) appears on 765 US grants and 1,391 published applications in this corpus.
Search patents in C25B- Granted patents
- 765
- Published applications
- 1,391
- Assignees
- 681
- Inventors
- 3,184
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 3 | 0 |
| 1984 | 12 | 0 |
| 1985 | 8 | 0 |
| 1986 | 16 | 0 |
| 1987 | 14 | 0 |
| 1988 | 10 | 0 |
| 1989 | 8 | 0 |
| 1990 | 9 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 9 | 0 |
| 1997 | 13 | 0 |
| 1998 | 15 | 0 |
| 1999 | 12 | 0 |
| 2000 | 11 | 0 |
| 2001 | 5 | 0 |
| 2002 | 13 | 7 |
| 2003 | 4 | 7 |
| 2004 | 5 | 13 |
| 2005 | 5 | 9 |
| 2006 | 4 | 7 |
| 2007 | 1 | 5 |
| 2008 | 7 | 17 |
| 2009 | 3 | 10 |
| 2010 | 6 | 13 |
| 2011 | 10 | 14 |
| 2012 | 6 | 20 |
| 2013 | 7 | 21 |
| 2014 | 8 | 23 |
| 2015 | 16 | 42 |
| 2016 | 11 | 49 |
| 2017 | 17 | 38 |
| 2018 | 29 | 41 |
| 2019 | 40 | 68 |
| 2020 | 36 | 64 |
| 2021 | 47 | 78 |
| 2022 | 43 | 100 |
| 2023 | 58 | 141 |
| 2024 | 56 | 216 |
| 2025 | 75 | 222 |
| 2026 | 49 | 166 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrogen production cathode and anode6 Oct 2026US 12,753,518 B2Civilized Power, LLC
- Production of chlorine, carbon monoxide and optionally hydrogen29 Sep 2026US 12,747,507 B2
- 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
- Gas diffusion electrode, an electrolysis system, and a method for operating an electrolysis system8 Sep 2026US 12,729,448 B2Siemens Energy Global GmbH & Co. KG
- Producing a stable activated nickel oxide hydroxide foam electrode8 Oct 2026US 2026/0308783 A1Evonik Operations GmbH
- Electrode composition for proton exchange membrane water electrolysis, electrode for proton exchange membrane water electrolysis, anode, membrane-electrode assembly, and proton exchange membrane water electrolysis cell8 Oct 2026US 2026/0308785 A1Hyundai Motor Company
- Re-activation process of gas diffusion electrode8 Oct 2026US 2026/0308788 A1Vito NV
- Mesh, water electrolysis apparatus, and fuel cell8 Oct 2026US 2026/0312082 A1Sumitomo Electric Industries, Ltd.
- Electrode, solid oxide cell including the same, and method of preparing solid oxide cell1 Oct 2026US 2026/0296913 A1Samsung Electro-Mechanics Co., Ltd.
Most cited
By later US patents
- Method of making an open pore structure132US 4,975,230 AVapor Technologies, Inc. · 1990
- Means and method for reducing carbon dioxide to a product109US 4,673,473 A1987
- V-Shaped sandwich-type cell with reticulate electodes66US 4,377,455 AOlin Corporation · 1983
- Fuel cell system for low pressure operation66US 6,054,228 ALynntech, Inc. · 2000
- Electrochemical cell having gas pressurized contact between laminar, gas diffusion electrode and current collector59US 4,722,773 AThe Dow Chemical Company · 1988