H01M 4/9083
On carbon or graphite
Official title: {on carbon or graphite}
H01M4/9083 (On carbon or graphite) appears on 617 US grants and 970 published applications in this corpus.
Search patents in H01M- Granted patents
- 617
- Published applications
- 970
- Assignees
- 477
- Inventors
- 2,294
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 8 |
| 2003 | 9 | 16 |
| 2004 | 6 | 24 |
| 2005 | 9 | 21 |
| 2006 | 16 | 25 |
| 2007 | 6 | 35 |
| 2008 | 9 | 38 |
| 2009 | 13 | 42 |
| 2010 | 21 | 43 |
| 2011 | 27 | 44 |
| 2012 | 23 | 44 |
| 2013 | 30 | 33 |
| 2014 | 26 | 51 |
| 2015 | 30 | 56 |
| 2016 | 29 | 41 |
| 2017 | 39 | 40 |
| 2018 | 39 | 42 |
| 2019 | 30 | 42 |
| 2020 | 28 | 47 |
| 2021 | 34 | 49 |
| 2022 | 29 | 61 |
| 2023 | 41 | 57 |
| 2024 | 38 | 44 |
| 2025 | 41 | 43 |
| 2026 | 15 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Membrane-electrode assembly capable of satisfying both of two requirements of excellent performance and high durability, and fuel cell including same6 Oct 2026US 12,755,996 B2Kolon Industries, Inc.
- Surface modified oxygen reduction electrochemical catalysts22 Sep 2026US 12,744,223 B2Toyota Jidosha Kabushiki Kaisha
- Electrode catalyst layer, membrane electrode assembly, and polymer electrolyte fuel cell22 Sep 2026US 12,744,224 B2Toppan Inc.
- Graphene and other 2D materials as layered “shells” supported on “core” nanoparticle carriers25 Aug 2026US 12,719,061 B2Breton SPA
- Electrochemical cell catalyst layers18 Aug 2026US 12,712,188 B2Robert Bosch GmbH
- Iron-nitrogen-carbon catalyst, preparation method therefor, and use thereof1 Oct 2026US 2026/0302266 A1Hainan Tropical Ocean University
- Method of forming n-doped carbon nanofoam17 Sep 2026US 2026/0274683 A1
- Catalyst layer17 Sep 2026US 2026/0279842 A1Toyota Jidosha Kabushiki Kaisha
- Polymer electrolyte membrane cells with carbon-ionomer microporous layers10 Sep 2026US 2026/0265930 A1GM Global Technology Operations LLC
- Catalyst layer for fuel cell10 Sep 2026US 2026/0269278 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Energy devices and methods for the fabrication of energy devices84US 6,753,108 B1Superior MicroPowders LLC · 2004
- Electrochemical conversion of anhydrous hydrogen halide to halogen gas using a cation-transporting membrane83US 5,411,641 AE. I. Du Pont de Nemours and Company · 1995
- Three dimensional macroscopic assemblages of randomly oriented carbon fibrils and composites containing same76US 5,691,054 AHyperion Catalysis Int'l., Inc. · 1997
- Mesoporous carbon materials comprising bifunctional catalysts61US 8,916,296 B2EnerG2 Technologies, Inc. · 2014
- Electrocatalyst powders, methods for producing powders and devices fabricated from same54US 6,967,183 B2Cabot Corporation · 2005