C01B 3/00
Hydrogen
Official title: Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen (production of water-gas or synthesis gas from solid carbonaceous material C10J)
C01B3/00 (Hydrogen) appears on 11,129 US grants and 13,087 published applications in this corpus.
Search patents in C01B- Granted patents
- 11,129
- Published applications
- 13,087
- Assignees
- 3,770
- Inventors
- 22,186
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 107 | 0 |
| 1977 | 101 | 0 |
| 1978 | 104 | 0 |
| 1979 | 69 | 0 |
| 1980 | 97 | 0 |
| 1981 | 79 | 0 |
| 1982 | 101 | 0 |
| 1983 | 103 | 0 |
| 1984 | 99 | 0 |
| 1985 | 79 | 0 |
| 1986 | 71 | 0 |
| 1987 | 94 | 0 |
| 1988 | 75 | 0 |
| 1989 | 91 | 0 |
| 1990 | 72 | 0 |
| 1991 | 82 | 0 |
| 1992 | 80 | 0 |
| 1993 | 71 | 0 |
| 1994 | 72 | 0 |
| 1995 | 60 | 0 |
| 1996 | 89 | 0 |
| 1997 | 92 | 0 |
| 1998 | 112 | 0 |
| 1999 | 141 | 0 |
| 2000 | 171 | 0 |
| 2001 | 203 | 93 |
| 2002 | 177 | 366 |
| 2003 | 262 | 433 |
| 2004 | 269 | 534 |
| 2005 | 218 | 518 |
| 2006 | 274 | 485 |
| 2007 | 260 | 526 |
| 2008 | 255 | 530 |
| 2009 | 295 | 594 |
| 2010 | 411 | 698 |
| 2011 | 398 | 610 |
| 2012 | 422 | 556 |
| 2013 | 470 | 524 |
| 2014 | 479 | 537 |
| 2015 | 502 | 570 |
| 2016 | 429 | 485 |
| 2017 | 416 | 465 |
| 2018 | 375 | 432 |
| 2019 | 367 | 372 |
| 2020 | 295 | 396 |
| 2021 | 299 | 425 |
| 2022 | 296 | 520 |
| 2023 | 365 | 598 |
| 2024 | 372 | 704 |
| 2025 | 401 | 666 |
| 2026 | 307 | 450 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Containerized processing of activated aluminum6 Oct 2026US 12,752,248 B1Ltag Systems LLC
- Complex oxides for reactive oxygen separation and related applications6 Oct 2026US 12,752,260 B2North Carolina State University
- Immobolized organometallic catalyst and application of same6 Oct 2026US 12,752,265 B2Saudi Arabian Oil Company
- Method for synthesising a liquid organic hydrogen carrier (LOHC) loaded with hydrogen using hydrogen produced from a methanisation digestate6 Oct 2026US 12,753,071 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Thermocatalytic decomposition of methane using catalyst system design and operational parameters to control product yield and properties6 Oct 2026US 12,753,072 B2Battelle Memorial Institute
- Hydrogen generation device8 Oct 2026US 2026/0307031 A1
- Electric radiant heating for direct conversion syngas reactor8 Oct 2026US 2026/0307033 A1Aether Fuels Pte. Ltd.
- Hydrogen production device8 Oct 2026US 2026/0307034 A1Mitsubishi Heavy Industries, Ltd.
- Hydrogen generation apparatus8 Oct 2026US 2026/0307037 A1
- Catalyst for methane reforming and manufacturing method thereof8 Oct 2026US 2026/0307056 A1Hanwha Solutions Corporation
Most cited
By later US patents
- Steam reformer with internal hydrogen purification533US 5,861,137 A1999
- Electro-mechanical interfaces to mount robotic surgical arms470US 7,762,825 B2Intuitive Surgical Operations, Inc. · 2010
- Process for the sensitization of an oxidation/reduction photocatalyst, and photocatalyst thus obtained420US 4,684,537 AR. E. Stiftung · 1987
- Method for simultaneous recovery of hydrogen from water and from hydrocarbons351US 5,525,322 AThe Regents of the University of California · 1996
- Hydrogen gas-extraction module and method of fabrication341US 6,152,987 AWorcester Polytechnic Institute · 2000