C01B 2203/048
The impurity being an organic compound
Official title: the impurity being an organic compound
C01B2203/048 (The impurity being an organic compound) appears on 624 US grants and 596 published applications in this corpus.
Search patents in C01B- Granted patents
- 624
- Published applications
- 596
- Assignees
- 329
- Inventors
- 1,502
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 11 | 0 |
| 1981 | 7 | 0 |
| 1982 | 14 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 9 | 0 |
| 1992 | 9 | 0 |
| 1993 | 5 | 0 |
| 1994 | 11 | 0 |
| 1995 | 7 | 0 |
| 1996 | 16 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 13 | 0 |
| 2000 | 13 | 0 |
| 2001 | 15 | 4 |
| 2002 | 13 | 14 |
| 2003 | 19 | 23 |
| 2004 | 13 | 24 |
| 2005 | 6 | 29 |
| 2006 | 13 | 30 |
| 2007 | 21 | 29 |
| 2008 | 17 | 37 |
| 2009 | 12 | 40 |
| 2010 | 23 | 47 |
| 2011 | 32 | 40 |
| 2012 | 29 | 30 |
| 2013 | 24 | 19 |
| 2014 | 27 | 14 |
| 2015 | 28 | 20 |
| 2016 | 25 | 32 |
| 2017 | 19 | 19 |
| 2018 | 19 | 15 |
| 2019 | 14 | 17 |
| 2020 | 8 | 13 |
| 2021 | 12 | 8 |
| 2022 | 7 | 16 |
| 2023 | 9 | 17 |
| 2024 | 17 | 15 |
| 2025 | 7 | 25 |
| 2026 | 4 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High selectivity and high CO2 plasticization resistant polymeric membranes for gas separations9 Jun 2026US 12,649,820 B2Uop LLC
- Direct coupled atmospheric carbon reduction device with hydrogen utilization24 Mar 2026US 12,583,744 B2
- Process to hydrothermally produce gases from residue streams using a series of reactors24 Mar 2026US 12,583,745 B2
- Hydrogen separation from natural gas17 Feb 2026US 12,551,844 B2Air Products and Chemicals, Inc.
- ATR-based hydrogen process and plant11 Nov 2025US 12,466,730 B2Haldor TopsøE A/S
- Methanol Production System that Reuses Unreacted Gas for Efficient Methanol Production10 Sep 2026US 2026/0264037 A1Doosan Enerbility Co., Ltd.
- Carbon formation chemical looping using oxygen27 Aug 2026US 2026/0250129 A1CZero Inc.
- Porous material for hydrogen purification and method for producing same, and hydrogen purification apparatus20 Aug 2026US 2026/0241366 A1Osaka Gas Chemicals Co., Ltd.
- Hydrogen supply system and method for operating same20 Aug 2026US 2026/0242216 A1Chiyoda Corporation
- Plant and process for producing hydrogen from hydrocarbons20 Aug 2026US 2026/0242219 A1Technip Energies France
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
- Enhanced hydrogen recovery from effluent gas streams144US 4,553,981 AUnion Carbide Corporation · 1985
- Selective adsorption process139US 3,986,849 AUnion Carbide Corporation · 1976