C01B 17/0473
By reaction of sulfur dioxide or sulfur trioxide containing gases with reducing
Official title: {by reaction of sulfur dioxide or sulfur trioxide containing gases with reducing agents other than hydrogen sulfide}
C01B17/0473 (By reaction of sulfur dioxide or sulfur trioxide containing gases with reducing) appears on 107 US grants and 31 published applications in this corpus.
Search patents in C01B- Granted patents
- 107
- Published applications
- 31
- Assignees
- 61
- Inventors
- 208
- Latest grant
- 17 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 14 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 4 |
| 2010 | 2 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 5 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 3 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 4 | 2 |
| 2023 | 2 | 2 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Catalyst for catalytic reduction of industrial flue gas SO2 with CO to prepare sulfur, method for preparing same and use thereof17 Sep 2024US 12,090,467 B2Nanjing Gekof Institute of Environmental Protection Technology & Equipment Co., Ltd.
- System and method for resource recycling of sulfur dioxide22 Aug 2023US 11,731,874 B2Jiangsu Deyitong Environmental Protection Technology Co., Ltd.
- Purification of gases containing sulfur compounds21 Mar 2023US 11,607,643 B2Saudi Arabian Oil Company
- Membrane process for H2 recovery from sulfur recovery tail gas stream of sulfur recovery units and process for environmentally greener sales gas12 Jul 2022US 11,383,200 B2Saudi Arabian Oil Company
- Process for preparing sulfur from reduction of sulfate/ nitrate by iron-carbon and recovering desulfurization/ denitration agents5 Apr 2022US 11,292,718 B2Shandong University
- System and method for resource recycling of sulfur dioxide16 Feb 2023US 2023/0046206 A1Jiangsu Deyitong Environmental Protection Technology Co., Ltd.
- Catalyst for catalytic reduction of industrial flue gas so2 with co to prepare sulfur, method for preparing same and use thereof9 Feb 2023US 2023/0043657 A1Nanjing Gekof Institute of Environmental Protection Technology & Equipment Co., Ltd.
- Purification of gases containing sulfur compounds16 Jun 2022US 2022/0184548 A1Saudi Arabian Oil Company
- Membrane process for h2 recovery from sulfur recovery tail gas stream of sulfur recovery units and process for environmentally greener sales gas3 Mar 2022US 2022/0062818 A1Saudi Arabian Oil Company
- System and method for recovering sulfur in copper smelting process28 Oct 2021US 2021/0331921 A1Shandong University
Most cited
By later US patents
- Ceramic membranes for catalytic membrane reactors with high ionic conductivities and low expansion properties91US 6,146,549 AEltron Research, Inc. · 2000
- Ion transport membranes with catalyzed mixed conducting porous layer73US 5,534,471 AAir Products and Chemicals, Inc. · 1996
- Process for producing cement from a flue gas desulfurization process waste product51US 5,766,339 ADravo Lime Company · 1998
- Removing SOx, CO and NOx from flue gases49US 5,591,417 AMobil Oil Corporation · 1997
- Removing SO.sub.x, NO.sub.X and CO from flue gases43US 5,547,648 AMobil Oil Corporation · 1996