C01B 2210/0043
Impurity removed
C01B2210/0043 (Impurity removed) appears on 913 US grants and 684 published applications in this corpus.
Search patents in C01B- Granted patents
- 913
- Published applications
- 684
- Assignees
- 439
- Inventors
- 1,990
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 7 | 0 |
| 1985 | 3 | 0 |
| 1986 | 12 | 0 |
| 1987 | 11 | 0 |
| 1988 | 16 | 0 |
| 1989 | 15 | 0 |
| 1990 | 11 | 0 |
| 1991 | 19 | 0 |
| 1992 | 19 | 0 |
| 1993 | 21 | 0 |
| 1994 | 13 | 0 |
| 1995 | 20 | 0 |
| 1996 | 30 | 0 |
| 1997 | 30 | 0 |
| 1998 | 32 | 0 |
| 1999 | 42 | 0 |
| 2000 | 39 | 0 |
| 2001 | 30 | 7 |
| 2002 | 31 | 29 |
| 2003 | 36 | 27 |
| 2004 | 23 | 31 |
| 2005 | 12 | 39 |
| 2006 | 18 | 37 |
| 2007 | 23 | 43 |
| 2008 | 30 | 35 |
| 2009 | 18 | 48 |
| 2010 | 28 | 47 |
| 2011 | 29 | 36 |
| 2012 | 32 | 28 |
| 2013 | 34 | 26 |
| 2014 | 28 | 16 |
| 2015 | 17 | 16 |
| 2016 | 18 | 17 |
| 2017 | 15 | 17 |
| 2018 | 10 | 28 |
| 2019 | 16 | 16 |
| 2020 | 12 | 19 |
| 2021 | 13 | 12 |
| 2022 | 10 | 21 |
| 2023 | 16 | 27 |
| 2024 | 9 | 32 |
| 2025 | 14 | 15 |
| 2026 | 16 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C01B 2210/0046NitrogenIndexing code578
- C01B 2210/0051Carbon dioxideIndexing code158
- C01B 2210/0062WaterIndexing code155
- C01B 2210/0045OxygenIndexing code129
- C01B 2210/0053HydrogenIndexing code101
- C01B 2210/0068Organic compoundsIndexing code80
- C01B 2210/005Carbon monoxideIndexing code59
- C01B 2210/0078Noble gasesIndexing code56
All 21 subgroupsShow fewer
- C01B 2210/0075Nitrogen oxidesIndexing code41
- C01B 2210/0071Sulfur oxidesIndexing code36
- C01B 2210/0064Hydrogen sulfideIndexing code15
- C01B 2210/0098Other impuritiesIndexing code14
- C01B 2210/0048AirIndexing code10
- C01B 2210/0054Hydrogen halidesIndexing code5
- C01B 2210/0067Hydrogen cyanideIndexing code5
- C01B 2210/0065AmmoniaIndexing code4
- C01B 2210/0092OzoneIndexing code4
- C01B 2210/0076Nitrogen halidesIndexing code1
- C01B 2210/0093Metals or metal compoundsIndexing code1
- C01B 2210/0073Sulfur halidesIndexing code0
- C01B 2210/0089PeroxidesIndexing code0
Recent patents
- Steam methane reforming with process carbon dioxide capture and ammonia firing15 Sep 2026US 12,735,316 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Producing hydrogen from hydrogen sulfide1 Sep 2026US 12,722,970 B2Saudi Arabian Oil Company
- Method of recycling helium from waste gas in semiconductor process1 Sep 2026US 12,722,973 B2Samsung Electronics Co., Ltd.
- Gas production device, gas production system and gas production method11 Aug 2026US 12,703,636 B2Sekisui Chemical Co., Ltd.
- Maximizing syngas carbon utilization and conversion to biofuel28 Jul 2026US 12,692,155 B2Enerkem, Inc.
- Oxygen concentrator assembled with quick-detach molecular sieve10 Sep 2026US 2026/0263997 A1
- Anaerobic digester-based system for rng and hydrogen productions3 Sep 2026US 2026/0257912 A1University of Southern California
- 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
- Method for obtaining xenon using a molecular sieve20 Aug 2026US 2026/0242223 A1Linde Aktiengesellschaft
- Anaerobic digester-based system for rng and hydrogen production13 Aug 2026US 2026/0233995 A1
Most cited
By later US patents
- Methanol plant retrofit for acetic acid manufacture208US 6,232,352 B1Acetex limited · 2001
- Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions202US 5,306,411 AThe Standard Oil Company · 1994
- High temperature fuel cell power plant165US 7,097,925 B2QuestAir Technologies Inc. · 2006
- Synthesis gas production by mixed conducting membranes with integrated conversion into liquid products162US 6,114,400 AAir Products and Chemicals, Inc. · 2000
- Portable oxygen concentrator151US 6,520,176 B1L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2003