H01M 4/8896
Pressing, rolling, calendering
Official title: {Pressing, rolling, calendering (membrane electrode assemblies H01M8/1004)}
H01M4/8896 (Pressing, rolling, calendering) appears on 231 US grants and 354 published applications in this corpus.
Search patents in H01M- Granted patents
- 231
- Published applications
- 354
- Assignees
- 213
- Inventors
- 945
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 6 | 5 |
| 2003 | 1 | 10 |
| 2004 | 4 | 16 |
| 2005 | 3 | 13 |
| 2006 | 5 | 17 |
| 2007 | 4 | 15 |
| 2008 | 6 | 24 |
| 2009 | 3 | 16 |
| 2010 | 6 | 15 |
| 2011 | 8 | 15 |
| 2012 | 9 | 13 |
| 2013 | 13 | 14 |
| 2014 | 9 | 10 |
| 2015 | 9 | 8 |
| 2016 | 8 | 7 |
| 2017 | 4 | 13 |
| 2018 | 12 | 11 |
| 2019 | 7 | 12 |
| 2020 | 8 | 19 |
| 2021 | 14 | 21 |
| 2022 | 12 | 19 |
| 2023 | 16 | 22 |
| 2024 | 10 | 19 |
| 2025 | 18 | 7 |
| 2026 | 6 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalyst-coated membrane and method of manufacture28 Jul 2026US 12,695,099 B2Johnson Matthey Hydrogen Technologies Limited
- Method of manufacturing a dry electrode9 Jun 2026US 12,651,739 B2Tesla, Inc.
- Methods of manufacturing a dry electrode19 May 2026US 12,633,513 B2Tesla, Inc.
- Hydrogen pumping proton exchange membrane electrochemical cell with carbon monoxide tolerant anode and method of making thereof14 Apr 2026US 12,603,315 B2Bloom Energy Corporation
- Bifacial sealed gas diffusion electrode3 Mar 2026US 12,567,625 B2Form Energy, Inc.
- Methods for manufacturing membrane electrode assembly for a proton exchange membrane electrochemical cell30 Jul 2026US 2026/0221478 A1GM Global Technology Operations LLC
- Method for producing a multi-layer, in particular five- or six-layer, membrane-electrode arrangement23 Jul 2026US 2026/0213221 A1Robert Bosch GmbH
- Fuel cell electrode catalytic layer and membrane electrode comprising same23 Jul 2026US 2026/0213222 A1Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Plant for Forming a Polar Plate of a Fuel Cell, and Associated Forming Method9 Jul 2026US 2026/0192350 A1
- Bifacial sealed gas diffusion electrode2 Jul 2026US 2026/0188791 A1Form Energy, Inc.
Most cited
By later US patents
- Dry mix method for making an electrochemical cell electrode62US 4,175,055 AUnited Technologies Corporation · 1979
- Bipolar electrode-electrolyte unit60US 5,955,215 ADornier GmbH · 1999
- Gas permeable electrode59US 4,931,168 ATanaka Kikinzoku Kogyo K.K. · 1990
- Dry floc method for making an electrochemical cell electrode54US 4,287,232 AUnited Technologies Corporation · 1981
- Membrane electrode assembly and method of its manufacture52US 6,042,959 A3M Innovative Properties Company · 2000