C01B 7/197
By adsorption
Official title: {by adsorption}
C01B7/197 (By adsorption) appears on 42 US grants and 28 published applications in this corpus.
Search patents in C01B- Granted patents
- 42
- Published applications
- 28
- Assignees
- 31
- Inventors
- 125
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 2 |
| 2002 | 4 | 6 |
| 2003 | 1 | 0 |
| 2004 | 1 | 3 |
| 2005 | 0 | 0 |
| 2006 | 2 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 2 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 4 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Preparation method and use method of material for deep purification of HF electronic gas29 Apr 2025US 12,285,735 B2Zhejiang Britech Co., Ltd.
- Two phase shell formation on metal nanostructures18 Jan 2022US 11,228,026 B2Honda Motor Co., Ltd.
- Method for producing diluted hydrofluoric acid14 Dec 2021US 11,198,609 B2Condias GmbH
- Process to recover hydrogen fluoride from hydrogen fluoride-polymer compositions7 May 2019US 10,280,082 B2Honeywell International Inc.
- Method for the purification of fluorine2 Sep 2014US 8,821,821 B2Solvay SA
- Methods for recovering hydrogen fluoride from a fluorocarbon production process19 Jun 2025US 2025/0197215 A1Honeywell International Inc.
- Hydrogen fluoride gas removal device and method for removing hydrogen fluoride gas16 May 2024US 2024/0157284 A1Resonac Corporation
- Hydrogen fluoride gas removal device and method for removing hydrogen fluoride gas2 May 2024US 2024/0139670 A1Resonac Corporation
- Preparation Method and Use Method of Material for Deep Purification of HF Electronic Gas10 Nov 2022US 2022/0355267 A1Zhejiang Britech Co., Ltd.
- Method for producing hydrogen fluoride from an aqueous solution of hexafluorosilicic acid28 Oct 2021US 2021/0331920 A1New Chemical Products LLC
Most cited
By later US patents
- Method and apparatus for purifying hydrogen fluoride62US 4,952,386 AAthens Corporation · 1990
- Process and composition for drying of gaseous hydrogen halides38US 4,853,148 AAdvanced Technology Materials, Inc. · 1989
- Point-of-use ammonia purification for electronic component manufacture28US 5,496,778 AStartec Ventures, Inc. · 1996
- On-site generation of ultra-high-purity buffered-HF for semiconductor processing28US 5,722,442 AStartec Ventures, Inc. · 1998
- Process and composition for drying of gaseous hydrogen halides26US 4,925,646 AAdvanced Technology Materials, Inc. · 1990