H01M 4/928
Unsupported catalytic particles
Official title: {Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state}
H01M4/928 (Unsupported catalytic particles) appears on 105 US grants and 107 published applications in this corpus.
Search patents in H01M- Granted patents
- 105
- Published applications
- 107
- Assignees
- 101
- Inventors
- 346
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 3 |
| 2002 | 0 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 9 |
| 2006 | 2 | 6 |
| 2007 | 0 | 9 |
| 2008 | 1 | 2 |
| 2009 | 2 | 4 |
| 2010 | 7 | 5 |
| 2011 | 2 | 7 |
| 2012 | 1 | 3 |
| 2013 | 3 | 3 |
| 2014 | 4 | 4 |
| 2015 | 4 | 9 |
| 2016 | 3 | 7 |
| 2017 | 4 | 4 |
| 2018 | 9 | 4 |
| 2019 | 3 | 3 |
| 2020 | 4 | 3 |
| 2021 | 2 | 3 |
| 2022 | 3 | 6 |
| 2023 | 1 | 3 |
| 2024 | 5 | 4 |
| 2025 | 4 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrochemical catalyst of core-shell structure and manufacturing method thereof22 Sep 2026US 12,744,222 B2Korea Institute of Science and Technology
- Oxygen evolution catalyst, production and use of same, membrane electrode arrangement and fuel cell or electrolytic cell21 Apr 2026US 12,609,326 B2Greenerity GmbH
- Electrocatalyst ink7 Oct 2025US 12,438,158 B2Johnson Matthey Hydrogen Technologies Limited
- Membrane electrode assembly manufacturing process16 Sep 2025US 12,418,039 B2W. L. Gore & Associates, Inc.
- Method for producing a catalyst-coated membrane24 Jun 2025US 12,341,200 B2Audi AG
- Process and membrane29 Jan 2026US 2026/0031366 A1Johnson Matthey Hydrogen Technologies Limited
- Oxygen evolution reaction catalyst31 Jul 2025US 2025/0246642 A1Johnson Matthey Hydrogen Technologies Limited
- Oxygen evolution reaction catalyst8 Aug 2024US 2024/0266551 A1Johnson Matthey Hydrogen Technologies Limited
- Electrocatalyst ink11 Jul 2024US 2024/0234748 A1Johnson Matthey Hydrogen Technologies Limited
- Electrochemical catalyst of core-shell structure and manufacturing method thereof20 Jun 2024US 2024/0204208 A1Korea Institute of Science and Technology
Most cited
By later US patents
- Membrane-electrode assembly for a direct methanol fuel cell88US 5,523,177 AGiner, Inc. · 1996
- Method for gas generation utilizing platinum metal electrocatalyst containing 5 to 60% ruthenium68US 4,039,409 AGeneral Electric Company · 1977
- Gas permeable electrode for electrochemical system56US 4,865,925 AHughes Aircraft Company · 1989
- Gas diffusion electrode for membrane fuel cells and method of its production55US 5,861,222 ADegussa AG · 1999
- Noble metal-refractory metal alloys as catalysts and method for making52US 4,186,110 AUnited Technologies Corporation · 1980