B01D 53/523
Mixtures of hydrogen sulfide and sulfur oxides
Official title: {Mixtures of hydrogen sulfide and sulfur oxides}
B01D53/523 (Mixtures of hydrogen sulfide and sulfur oxides) appears on 83 US grants and 40 published applications in this corpus.
Search patents in B01D- Granted patents
- 83
- Published applications
- 40
- Assignees
- 51
- Inventors
- 172
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 2 | 4 |
| 2011 | 2 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 4 | 4 |
| 2020 | 1 | 2 |
| 2021 | 1 | 3 |
| 2022 | 5 | 8 |
| 2023 | 6 | 0 |
| 2024 | 1 | 2 |
| 2025 | 3 | 1 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thermo-chemical transformation of wet food waste with plastics, biodegradable packaging, and fluorinated compounds in a multi-annular concentric feed rotary kiln system2 Jun 2026US 12,644,061 B1Simple Approach Systems, Inc.
- Treatment of acid gases using molten alkali metal borates, and associated methods of separation24 Feb 2026US 12,558,651 B2Massachusetts Institute of Technology
- Method for production of elemental sulfur and sulfuric acid10 Feb 2026US 12,545,580 B2Haldor TopsøE A/S
- Hydrogen production from gasification of sour gas16 Sep 2025US 12,415,723 B2Saudi Arabian Oil Company
- Process for simultaneous removal of hydrogen sulfide and heavy metals16 Sep 2025US 12,415,726 B2King Fahd University of Petroleum and Minerals
- Methods for Absorbing a Targeted Compound from a Gas Stream for Subsequent Processing or Use8 Jan 2026US 2026/0008007 A1
- Hydrogen production from gasification of sour gas27 Mar 2025US 2025/0100873 A1Saudi Arabian Oil Company
- Process for simultaneous removal of hydrogen sulfide and heavy metals18 Apr 2024US 2024/0124305 A1King Fahd University of Petroleum and Minerals
- Treatment of acid gases using molten alkali metal borates, and associated methods of separation1 Feb 2024US 2024/0033684 A1Massachusetts Institute of Technology
- Methods for Absorbing a Targeted Compound from a Gas Stream for Subsequent Processing or Use29 Dec 2022US 2022/0410066 A1
Most cited
By later US patents
- Limestone-based sorbent agglomerates for removal of sulfur compounds in hot gases and method of making87US 4,387,653 AEngelhard Corporation · 1983
- 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
- Process for the high recovery efficiency of sulfur from an acid gas stream40US 7,754,471 B2Shell Oil Company · 2010
- Process for removing hydrogen sulfide from gas streams which include or are supplemented with sulfur dioxide, by scrubbing with a nonaqueous sorbent38US 6,818,194 B2CrystaTech, Inc. · 2004