B01D 2257/108
Hydrogen
B01D2257/108 (Hydrogen) appears on 492 US grants and 635 published applications in this corpus.
Search patents in B01D- Granted patents
- 492
- Published applications
- 635
- Assignees
- 367
- Inventors
- 1,624
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 11 | 0 |
| 2000 | 5 | 0 |
| 2001 | 10 | 1 |
| 2002 | 11 | 9 |
| 2003 | 15 | 22 |
| 2004 | 12 | 10 |
| 2005 | 6 | 16 |
| 2006 | 9 | 15 |
| 2007 | 8 | 18 |
| 2008 | 9 | 15 |
| 2009 | 9 | 25 |
| 2010 | 18 | 23 |
| 2011 | 15 | 11 |
| 2012 | 11 | 16 |
| 2013 | 16 | 15 |
| 2014 | 16 | 17 |
| 2015 | 14 | 27 |
| 2016 | 20 | 30 |
| 2017 | 18 | 28 |
| 2018 | 24 | 34 |
| 2019 | 19 | 28 |
| 2020 | 20 | 28 |
| 2021 | 26 | 36 |
| 2022 | 29 | 43 |
| 2023 | 37 | 37 |
| 2024 | 24 | 55 |
| 2025 | 27 | 43 |
| 2026 | 24 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Analysis device and analysis method for quality index of natural gas product and application6 Oct 2026US 12,754,171 B2PetroChina Company Limited
- Apparatus for producing hydrogen gas29 Sep 2026US 12,747,157 B2Hyundai Motor Company
- Analysis system and method for impurity components in perfluoropropane22 Sep 2026US 12,742,752 B2Lansis Instrument (Shanghai) Co., Ltd
- Dehydrogenation and pyrolysis product recovery with heat integration8 Sep 2026US 12,728,378 B2Uop LLC
- Producing hydrogen from hydrogen sulfide1 Sep 2026US 12,722,970 B2Saudi Arabian Oil Company
- Exhaust aftertreatment system, an engine system, and methods for controlling operation thereof3 Sep 2026US 2026/0258743 A1Volvo Truck Corporation
- Exhaust system3 Sep 2026US 2026/0259511 A1Ebara Corporation
- System to collect, recover and recycle chemical exhaust from semiconductor processing chambers27 Aug 2026US 2026/0249209 A1APPLIED Materials.Inc.
- Dual-layer hollow fibre membrane27 Aug 2026US 2026/0249249 A1Divigas Pet Ltd
- Mixed gas separation device and mixed gas separation method27 Aug 2026US 2026/0250130 A1L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitaion des Procédés Georges Claude
Most cited
By later US patents
- Steam reformer with internal hydrogen purification269US 5,997,594 ANorthwest Power Systems, LLC · 1999
- Composite hydrogen separation element and module185US 5,498,278 ABend Research, Inc. · 1996
- Composite hydrogen separation element and module164US 5,645,626 ABend Research, Inc. · 1997
- Composite hydrogen separation metal membrane129US 5,393,325 ABend Research, Inc. · 1995
- Multistage system for separating gas by adsorption121US 6,514,318 B2QuestAir Technologies Inc. · 2003