C25B 13/02
Diaphragms: characterised by shape or form
Official title: characterised by shape or form
C25B13/02 (Diaphragms: characterised by shape or form) appears on 267 US grants and 591 published applications in this corpus.
Search patents in C25B- Granted patents
- 267
- Published applications
- 591
- Assignees
- 291
- Inventors
- 1,293
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 3 |
| 2010 | 1 | 4 |
| 2011 | 8 | 11 |
| 2012 | 1 | 7 |
| 2013 | 1 | 10 |
| 2014 | 7 | 14 |
| 2015 | 10 | 17 |
| 2016 | 7 | 21 |
| 2017 | 7 | 19 |
| 2018 | 11 | 10 |
| 2019 | 17 | 16 |
| 2020 | 13 | 24 |
| 2021 | 17 | 34 |
| 2022 | 13 | 43 |
| 2023 | 29 | 61 |
| 2024 | 21 | 94 |
| 2025 | 31 | 100 |
| 2026 | 21 | 96 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrophilic member with cation and anion conducting membranes22 Sep 2026US 12,742,247 B2Ohmium International, Inc.
- Multilayer reinforced composite electrolyte membrane and method for manufacturing same15 Sep 2026US 12,735,796 B2Korea Institute of Science and Technology
- Pump free alkaline electrolyte membrane water electrolytic device25 Aug 2026US 12,716,135 B2The United States of America as represented by the Secretary of the Army
- Separator for water electrolysis25 Aug 2026US 12,716,140 B2Agfa-Gevaert
- Electrolyzer stack end plate assembly with fluid-isolating insert(s)11 Aug 2026US 12,703,920 B2Plug Power Inc.
- Gas generator for a tool, usage of the gas generator and a tool with a gas generator8 Oct 2026US 2026/0308772 A1Hilti Aktiengesellschaft
- Plane parallel converging gas flow electrolyzer, cell and use thereof8 Oct 2026US 2026/0308787 A1
- Electro-synthetic or electro-energy cell, system, and method of operation8 Oct 2026US 2026/0312090 A1Hysata Pty Ltd
- Electrolyte membrane, catalyst-coated electrolyte membrane and transfer sheet used for production thereof, membrane electrode assembly, water electrolysis device, and method of producing catalyst-coated electrolyte membrane24 Sep 2026US 2026/0286542 A1Toray Industries, Inc.
- Electrochemical electrode structure, electrochemical cell, and method of retrofitting a finite-gap electrochemical cell into a zero-gap type electrochemical cell24 Sep 2026US 2026/0286544 A1thyssenkrupp nucera AG & Co. KGaA
Most cited
By later US patents
- Electrolytic cell with composite, porous diaphragm164US 5,183,545 A1993
- Membrane with internal passages to permit fluid flow and an electrochemical cell containing the same98US 5,635,039 ALynntech, Inc. · 1997
- Electrolytic process74US 4,089,758 AImperial Chemical Industries PLC · 1978
- Method and apparatus for electrochemical production of ozone73US 5,460,705 ALynntech, Inc. · 1995
- Gas humidification system using water permeable membranes55US 5,996,976 ALynntech, Inc. · 1999