C01B 21/0411
Chemical processing only
Official title: {Chemical processing only}
C01B21/0411 (Chemical processing only) appears on 67 US grants and 42 published applications in this corpus.
Search patents in C01B- Granted patents
- 67
- Published applications
- 42
- Assignees
- 47
- Inventors
- 141
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 1 | 5 |
| 2015 | 1 | 2 |
| 2016 | 4 | 2 |
| 2017 | 1 | 2 |
| 2018 | 3 | 6 |
| 2019 | 3 | 3 |
| 2020 | 4 | 1 |
| 2021 | 4 | 4 |
| 2022 | 0 | 2 |
| 2023 | 3 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System for obtaining high purity nitrogen in nitrogen gas purification applications and a method thereof17 Feb 2026US 12,552,669 B2Mikropor Makina Sana Yi Ve Ticaret Anonim Sirketi
- Methods to produce zeolites with the GME topology and compositions derived therefrom4 Jul 2023US 11,691,131 B2California Institute of Technology
- Photocatalyst comprising bimetallic nanoparticles and graphene oxide for denitrification reaction, and water treatment method using same9 May 2023US 11,642,662 B2Postech Research and Business Development Foundation
- Zincoaluminosilicates with GME topologies and methods of making and using the same21 Feb 2023US 11,583,838 B2California Institute of Technology
- Zeolites with the GME topology and methods of using the same9 Nov 2021US 11,167,275 B2California Institute of Technology
- High efficiency electro-photocatalysts16 Jul 2026US 2026/0199827 A1
- Thermally driven nitrogen and ammonia production13 Nov 2025US 2025/0346489 A1National Technology & Engineering Solutions of Sandia, LLC
- Systems and methods for obtaining nitrogen and carbon dioxide from a flue gas3 Oct 2024US 2024/0325974 A1American Energy Corporation
- A system for obtaining high purity nitrogen in nitrogen gas purification applications and a method thereof20 Jul 2023US 2023/0227310 A1Mikropor Makina Sanayi Ve Ticaret Anonim Sirketi
- Photocatalyst comprising bimetallic nanoparticles and graphene oxide for denitrification reaction, and water treatment method using same18 Aug 2022US 2022/0258139 A1Postech Research and Business Development Foundation
Most cited
By later US patents
- Adsorbent regeneration and gas separation utilizing microwave heating96US 4,322,394 ABattelle Memorial Institute · 1982
- Bulk gas sorption and apparatus, gas containment/treatment system comprising same, and sorbent composition therefor81US 5,151,395 ANovapure Corporation · 1992
- Method for producing nitrogen to use in under balanced drilling, secondary recovery production operations and pipeline maintenance68US 7,468,173 B2Sunstone Corporation · 2008
- Method and apparatus for producing oxygen and nitrogen and membrane therefor49US 4,542,010 ABend Research, Inc. · 1985
- Process and composition for purifying arsine, phosphine, ammonia, and inert gases to remove Lewis acid and oxidant impurities therefrom43US 4,761,395 AAdvanced Technology Materials, Inc. · 1988