H01M 4/8821
Wet proofing
Official title: {Wet proofing}
H01M4/8821 (Wet proofing) appears on 81 US grants and 68 published applications in this corpus.
Search patents in H01M- Granted patents
- 81
- Published applications
- 68
- Assignees
- 68
- Inventors
- 247
- Latest grant
- 30 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 1 |
| 2002 | 5 | 3 |
| 2003 | 2 | 6 |
| 2004 | 3 | 10 |
| 2005 | 1 | 1 |
| 2006 | 4 | 2 |
| 2007 | 2 | 7 |
| 2008 | 3 | 4 |
| 2009 | 0 | 4 |
| 2010 | 3 | 2 |
| 2011 | 1 | 2 |
| 2012 | 2 | 2 |
| 2013 | 1 | 4 |
| 2014 | 2 | 1 |
| 2015 | 4 | 4 |
| 2016 | 1 | 2 |
| 2017 | 2 | 2 |
| 2018 | 1 | 4 |
| 2019 | 2 | 2 |
| 2020 | 1 | 2 |
| 2021 | 1 | 0 |
| 2022 | 3 | 1 |
| 2023 | 2 | 2 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Gas diffusion layer, a preparation method therefor, a membrane electrode assembly and a fuel cell30 Jan 2024US 11,888,166 B2Shanghai Jazz New Material Technology Co., Ltd.
- Gas diffusion layer comprising microporous layer including carbon having partially graphitized structure and radical scavenger additive, and fuel cell employing the same24 Oct 2023US 11,799,090 B2JNTG Co., Ltd.
- Micro-porous layer and manufacturing method therefor, gas diffusion electrode substrate, and fuel battery4 Apr 2023US 11,621,426 B2Toray Industries, Inc.
- Gas diffusion electrode and production method therefor22 Mar 2022US 11,283,082 B2Toray Industries, Inc.
- Multilayer structure incorporating a mat of carbon nanotubes as diffusion layer in a PEMFC8 Mar 2022US 11,271,220 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Electrode and method of producing the same, and electrochemical device using the same21 Dec 2023US 2023/0411629 A1The Doshisha
- Gas diffusion layer, a preparation method therefor, a membrane electrode assembly and a fuel cell9 Feb 2023US 2023/0045638 A1Shanghai Jazz New Material Technology Co., Ltd.
- Gas Diffusion Layer Comprising Microporous Layer Including Carbon Having Partially Graphitized Structure and Radical Scavenger Additive, and Fuel Cell Employing the Same21 Jul 2022US 2022/0231304 A1JNTG Co., Ltd.
- Micro-porous layer and manufacturing method therefor, gas diffusion electrode substrate, and fuel battery1 Oct 2020US 2020/0313200 A1Toray Industries, Inc.
- Method of forming gas diffusion layer on carbon paper used in fuel cells and carbon paper having gas diffusion layer formed thereon used in fuel cells14 May 2020US 2020/0152995 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Direct methanol feed fuel cell and system113US 5,773,162 ACalifornia Institute of Technology · 1998
- Ion exchange and electrode assembly for an electrochemical cell86US 6,054,230 AJapan Gore-Tex, Inc. · 2000
- Direct methanol feed fuel cell and system57US 6,265,093 B1California Institute of Technology · 2001
- Direct methanol feed fuel cell and system51US 6,303,244 B1California Institute of Technology · 2001
- Method for forming an electrode active layer or sheet42US 4,379,772 ADiamond Shamrock Corporation · 1983