C01B 17/0232
Purification
Official title: {Purification, e.g. degassing}
C01B17/0232 (Purification) appears on 88 US grants and 55 published applications in this corpus.
Search patents in C01B- Granted patents
- 88
- Published applications
- 55
- Assignees
- 67
- Inventors
- 174
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 6 |
| 2011 | 6 | 4 |
| 2012 | 0 | 1 |
| 2013 | 2 | 1 |
| 2014 | 3 | 8 |
| 2015 | 3 | 3 |
| 2016 | 2 | 2 |
| 2017 | 5 | 3 |
| 2018 | 3 | 5 |
| 2019 | 4 | 3 |
| 2020 | 2 | 2 |
| 2021 | 1 | 2 |
| 2022 | 3 | 1 |
| 2023 | 3 | 4 |
| 2024 | 0 | 0 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reactor system and method thereof for degassing sulfur14 Jul 2026US 12,679,728 B2Fluor Technologies Corporation
- Production system and method for insoluble sulfur11 Nov 2025US 12,465,903 B2China Petroleum & Chemical Corporation
- Liquid sulfur degassing14 Jan 2025US 12,195,333 B2Fluor Technologies Corporation
- System and method for resource recycling of sulfur dioxide22 Aug 2023US 11,731,874 B2Jiangsu Deyitong Environmental Protection Technology Co., Ltd.
- Liquid sulfur degassing1 Aug 2023US 11,713,246 B2Fluor Technologies Corporation
- Reactor system and method thereof for degassing sulfur1 Oct 2026US 2026/0296887 A1Fluor Technologies Corporation
- Apparatus for recovering sulfur from unsaturated sulfur vapor and use method therefor21 May 2026US 2026/0138049 A1Fuzhou University
- Liquid sulfur degassing17 Apr 2025US 2025/0122078 A1Fluor Technologies Corporation
- Reactor system and method thereof for degassing sulfur28 Dec 2023US 2023/0416087 A1Fluor Technologies Corporation
- Liquid sulfur degassing26 Oct 2023US 2023/0339751 A1Fluor Technologies Corporation
Most cited
By later US patents
- Process for the high pressure degassing of hydrogen sulfide from liquid sulfur61US 5,632,967 AGoar, Allison & Associates, Inc. · 1997
- Reactor, a retained catalyst structure, and a method for improving decomposition of polysulfides and removal of hydrogen sulfide in liquid sulfur47US 8,361,432 B2Fluor Enterprises, Inc. · 2013
- Process for reducing sulfur emission of sulfur plant44US 8,871,176 B2China Petroleum & Chemical Corporation · 2014
- Method for effecting gas-liquid contact41US 5,585,005 AApollo Environmental Systems Corp. · 1996
- Process and apparatus for treating a liquid with a gas31US 5,087,292 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1992