C01B 17/027
Recovery of sulfur from material containing elemental sulfur
Official title: Recovery of sulfur from material containing elemental sulfur, e.g. luxmasses {or sulfur containing ores}; Purification {of the recovered sulfur}
C01B17/027 (Recovery of sulfur from material containing elemental sulfur) appears on 42 US grants and 21 published applications in this corpus.
Search patents in C01B- Granted patents
- 42
- Published applications
- 21
- Assignees
- 35
- Inventors
- 84
- Latest grant
- 4 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
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| 1983 | 1 | 0 |
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| 1999 | 0 | 0 |
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| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 2 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
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| 2015 | 2 | 0 |
| 2016 | 0 | 3 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gasification or liquefaction of coal using a metal reactant alloy composition4 Mar 2025US 12,241,132 B2
- Gasification or liquefaction of coal using a metal reactant alloy composition14 Jun 2022US 11,359,253 B2Elemental Recycling, Inc.
- Method and system of elemental sulfur recycling and catalyst regenerating for sulfur-deposited catalyst30 Mar 2021US 10,960,391 B2Kunming University of Science and Technology
- Method for recovering gold from activated carbon27 Aug 2019US 10,392,679 B2JX Nippon Mining & Metals Corporation
- Gasification or liquefaction of coal using a metal reactant alloy composition11 Jun 2019US 10,316,375 B2
- Apparatus for recovering sulfur from unsaturated sulfur vapor and use method therefor21 May 2026US 2026/0138049 A1Fuzhou University
- Gasification or Liquefaction of Coal Using a Metal Reactant Alloy Composition19 Jun 2025US 2025/0197955 A1
- Gasification or Liquefaction of Coal Using a Metal Reactant Alloy Composition8 Sep 2022US 2022/0282345 A1Elemental Recycling, Inc.
- Recovery of metals from pyrite27 May 2021US 2021/0156003 A1Cobalt Blue Holdings Ltd
- Method and system of elemental sulfur recycling and catalyst regenerating for sulfur-deposited catalyst28 May 2020US 2020/0164355 A1Kunming University of Science and Technology
Most cited
By later US patents
- Separation of solvent from liquid sulfur23US 4,111,805 APhillips Petroleum Company · 1978
- Process and apparatus for generating elemental sulfur and re-usable metal oxide from spent metal sulfide sorbents22US 5,401,475 AG.E. Environmental Services, Inc. · 1995
- Water condenser/separator systems for Claus processes16US 4,935,221 AAir Products and Chemicals, Inc. · 1990
- Production of elemental sulphur14US 4,041,141 AExxon Research & Engineering Co. · 1977
- Method for removing elemental sulfur particles from the aqueous washing solution of a hydrogen sulfide removal process13US 4,508,537 AUnion Oil Company of California · 1985