H01M 4/8846
Impregnation
Official title: {Impregnation}
H01M4/8846 (Impregnation) appears on 168 US grants and 222 published applications in this corpus.
Search patents in H01M- Granted patents
- 168
- Published applications
- 222
- Assignees
- 179
- Inventors
- 688
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 2 | 10 |
| 2004 | 4 | 6 |
| 2005 | 2 | 8 |
| 2006 | 8 | 8 |
| 2007 | 5 | 9 |
| 2008 | 0 | 5 |
| 2009 | 2 | 14 |
| 2010 | 7 | 15 |
| 2011 | 8 | 12 |
| 2012 | 6 | 10 |
| 2013 | 7 | 9 |
| 2014 | 7 | 13 |
| 2015 | 8 | 12 |
| 2016 | 6 | 11 |
| 2017 | 10 | 5 |
| 2018 | 11 | 7 |
| 2019 | 3 | 5 |
| 2020 | 5 | 7 |
| 2021 | 8 | 21 |
| 2022 | 9 | 8 |
| 2023 | 10 | 7 |
| 2024 | 7 | 8 |
| 2025 | 5 | 6 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Noble metal single atom or cluster-porous molybdenum carbide/carbon nanocomposite using dynamic arrangement of noble metal atoms, method for manufacturing same, catalyst for hydrogen evolution reaction or hydrogen oxidation reaction comprising same, and electrode comprising the catalyst25 Aug 2026US 12,719,062 B2Korea Advanced Institute of Science and Technology
- Catalyst for fuel cells and method for producing same4 Aug 2026US 12,700,596 B2Cataler Corporation
- Carbon fiber and graphene compounded high-strength porous material, and gas diffusion layer and preparation method therefor30 Jun 2026US 12,671,094 B2Anhui University
- Gas diffusion layer for fuel cells, having improved bending properties3 Mar 2026US 12,567,591 B2Carl Freudenberg KG
- Electrolyte membrane for lithium-air battery, method of manufacturing same and lithium-air battery comprising same27 Jan 2026US 12,537,266 B2Hyundai Motor Company
- Fuel cell catalyst and preparation method therefor23 Jul 2026US 2026/0213224 A1Kolon Inustries, Inc.
- Fuel cell catalyst, method for manufacturing same, and fuel cell comprising same18 Jun 2026US 2026/0171430 A1Kolon Industries, Inc.
- Method to make isostructural bilayer oxygen electrode22 Jan 2026US 2026/0024781 A1University of South Carolina
- Pt-anchored over zirconium phosphate for proton exchange membrane fuel cell applications9 Oct 2025US 2025/0316719 A1
- Use of a porous recycling layer for co2 electroreduction to multicarbon products with high conversion efficiency13 Mar 2025US 2025/0084542 A1The Governing Council of the University of Toronto
Most cited
By later US patents
- Nanowire-based membrane electrode assemblies for fuel cells164US 7,179,561 B2Nanosys, Inc. · 2007
- Nanowire-based membrane electrode assemblies for fuel cells109US 7,977,013 B2Nanosys, Inc. · 2011
- Nanowire-based membrane electrode assemblies for fuel cells107US 7,977,007 B2Nanosys, Inc. · 2011
- Ion exchange and electrode assembly for an electrochemical cell86US 6,054,230 AJapan Gore-Tex, Inc. · 2000
- Energy devices and methods for the fabrication of energy devices84US 6,753,108 B1Superior MicroPowders LLC · 2004