C01B 17/0421
Multistage combustion
Official title: {Multistage combustion}
C01B17/0421 (Multistage combustion) appears on 27 US grants and 8 published applications in this corpus.
Search patents in C01B- Granted patents
- 27
- Published applications
- 8
- Assignees
- 19
- Inventors
- 35
- Latest grant
- 23 Jun 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 2 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 1 | 1 |
| 2015 | 3 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Ammonia destruction methods for use in a Claus tail gas treating unit23 Jun 2015US 9,061,246 B2Worleyparsons Group, Inc.
- Process of conversion sulfur compounds to elemental sulfur by using direct reduction and oxidation catalysts in Claus units5 May 2015US 9,023,309 B1
- Staged combustion of sulfureous combustible effluents with recovery of the sulfur in the claus process14 Apr 2015US 9,005,566 B2Total SA
- CO2 recovery using the sure process4 Mar 2014US 8,663,589 B2Linde Aktiengesellschaft
- Thermal reduction of sulfur dioxide to sulfur with temperature controlled furnace18 Jun 2013US 8,465,722 B2Rameshni & Associates Technology & Engineering
- Sulfur Recovery Unit to Convert Hydrogen Sulfide to Elemental Sulfur28 Nov 2024US 2024/0391771 A1Saudi Arabian Oil Company
- Staged combustion of sulfureous combustible effluents with recovery of the sulfur in the claus process31 Jul 2014US 2014/0208998 A1Total SA
- Ammonia destruction methods for use in a claus tail gas treating unit29 Aug 2013US 2013/0224094 A1Worleyparsons Group, Inc.
- Co2 recovery using the sure process21 Mar 2013US 2013/0071308 A1Linde Aktiengesellschaft
- Thermal reduction of sulfur dioxide to sulfur with temperature controlled furnace20 Dec 2012US 2012/0321548 A1Rameshni & Associates Technology & Engineering
Most cited
By later US patents
- Method and apparatus for recovering sulfur from gases containing hydrogen sulfide37US 5,028,409 AAmerican Combustion, Inc. · 1991
- Apparatus for the production of sulfur from mixtures of hydrogen sulfide and fixed nitrogen compounds19US 4,038,036 AThe Ralph M. Parsons Company · 1977
- Apparatus for burning hydrogen sulphide16US 4,596,699 ASociete Nationale Elf Aquitaine (Production) · 1986
- Dual combustion oxygen-enriched claus sulfur plant14US 4,780,305 AThe Ralph M. Parsons Company · 1988
- Process for the production of sulphur from at least one sour gas containing hydrogen sulphide and a fuel effluent and thermal reactor14US 5,508,013 AElf Aquitaine Production · 1996