C01B 2203/0495
The impurity being water
Official title: the impurity being water
C01B2203/0495 (The impurity being water) appears on 743 US grants and 823 published applications in this corpus.
Search patents in C01B- Granted patents
- 743
- Published applications
- 823
- Assignees
- 426
- Inventors
- 1,920
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 9 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 3 | 0 |
| 1995 | 9 | 0 |
| 1996 | 12 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 13 | 0 |
| 2000 | 19 | 0 |
| 2001 | 23 | 6 |
| 2002 | 15 | 33 |
| 2003 | 25 | 31 |
| 2004 | 16 | 27 |
| 2005 | 21 | 36 |
| 2006 | 15 | 31 |
| 2007 | 20 | 34 |
| 2008 | 21 | 39 |
| 2009 | 17 | 39 |
| 2010 | 30 | 43 |
| 2011 | 31 | 40 |
| 2012 | 25 | 31 |
| 2013 | 27 | 28 |
| 2014 | 25 | 50 |
| 2015 | 37 | 32 |
| 2016 | 35 | 27 |
| 2017 | 26 | 27 |
| 2018 | 26 | 22 |
| 2019 | 15 | 18 |
| 2020 | 16 | 21 |
| 2021 | 15 | 21 |
| 2022 | 15 | 36 |
| 2023 | 21 | 52 |
| 2024 | 27 | 39 |
| 2025 | 19 | 39 |
| 2026 | 16 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Converting natural gas to dimethyl ether8 Sep 2026US 12,729,174 B2Saudi Arabian Oil Company
- Plasma carbon sequestration system and method25 Aug 2026US 12,715,824 B2Xi' An Jiaotong University
- System and method for purifying hydrogen, and system for producing hydrogen by water electrolysis11 Aug 2026US 12,702,949 B2Wuxi Longi Hydrogen Technology Co., Ltd.
- Pressure swing adsorption apparatus for high purity hydrogen purification from ammonia decomposition and hydrogen purification method using the same4 Aug 2026US 12,697,581 B2Korea Institute of Energy Research
- Methods for forming gas products from hydrocarbon feeds4 Aug 2026US 12,698,207 B2Saudi Arabian Oil Company
- Dehumidification apparatus, hydrogen production equipment, and method for operating dehumidification apparatus1 Oct 2026US 2026/0295515 A1Mitsubishi Heavy Industries, Ltd.
- Carbon neutral hydrogen production24 Sep 2026US 2026/0285681 A1Saudi Arabian Oil Company
- Process for producing hydrogen10 Sep 2026US 2026/0265053 A1Johnson Matthey Davy Technologies Limited
- Carbon formation chemical looping using oxygen27 Aug 2026US 2026/0250129 A1CZero Inc.
- Biogas feed for carbon monoxide production27 Aug 2026US 2026/0250588 A1Topsoe A/S
Most cited
By later US patents
- Method and system for supplying hydrogen for use in fuel cells190US 6,348,278 B1Mobil Oil Corporation · 2002
- 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
- Integrated hydrocarbon reforming system and controls150US 6,641,625 B1Nuvera Fuel Cells, LLC · 2003
- Indirectly heated thermochemical reactor apparatus and processes143US 5,059,404 AManufacturing and Technology Conversion International, Inc. · 1991