C01B 17/0452
Process control
Official title: {Process control; Start-up or cooling-down procedures of the Claus process}
C01B17/0452 (Process control) appears on 41 US grants and 29 published applications in this corpus.
Search patents in C01B- Granted patents
- 41
- Published applications
- 29
- Assignees
- 34
- Inventors
- 84
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 3 | 3 |
| 2010 | 2 | 2 |
| 2011 | 2 | 3 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 2 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 2 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 0 |
| 2022 | 0 | 4 |
| 2023 | 4 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for production of elemental sulfur and sulfuric acid10 Feb 2026US 12,545,580 B2Haldor TopsøE A/S
- Adaptive control of BTX removal in sulfur recovery units16 Sep 2025US 12,415,725 B2Saudi Arabian Oil Company
- Method for production of elemental sulfur by part or fully catalytic oxidation of Claus tail gas7 Nov 2023US 11,807,527 B2Haldor TopsøE A/S
- Sulfur recovery unit oxidation air management during SuperClaus to Claus switching3 Oct 2023US 11,772,970 B1Saudi Arabian Oil Company
- Method for production of sulfur and sulfuric acid4 Jul 2023US 11,691,877 B2Haldor TopsøE A/S
- Adaptive control of btx removal in sulfur recovery units2 May 2024US 2024/0140796 A1Saudi Arabian Oil Company
- Sulfur Recovery Unit with Fuel Gas Firing16 Nov 2023US 2023/0365406 A1Saudi Arabian Oil Company
- Method for production of elemental sulfur by part or fully catalytic oxidation of claus tail gas28 Jul 2022US 2022/0234891 A1Haldor TopsøE A/S
- Method for production of elemental sulfur and sulfuric acid21 Jul 2022US 2022/0227625 A1Haldor TopsøE A/S
- Revamping of a claus plant with a sulfuric acid plan9 Jun 2022US 2022/0177306 A1Haldor TopsøE A/S
Most cited
By later US patents
- Configurations and methods for claus plant operation with variable sulfur content70US 7,879,135 B2Fluor Technologies Corporation · 2011
- Temperature moderation of an oxygen enriched claus sulfur plant using an ejector51US 6,508,998 B1Air Products and Chemicals, Inc. · 2003
- Process for recovering sulfur from sulfur-containing gases30US 4,988,494 AComprino, B.V. · 1991
- Control system for a sulfur process19US 4,100,266 APhillips Petroleum Company · 1978
- Oxygen control system for a sulfur recovery unit13US 5,266,274 ATPA, Inc. · 1993