Systems, methods, and techniques for processing hydrogen sulfide
US-2026078001-A1 · Mar 19, 2026 · US
Separation of the obtained sulfur
Separation of the obtained sulfur · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B17/0447 |
| Official title | {Separation of the obtained sulfur} |
| Display label | Separation of the obtained sulfur |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 2 |
| 2017 | 8 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 8 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for production of elemental sulfur and sulfuric acid
US-12545580-B2 · Feb 10, 2026 · US
Producing hydrogen from hydrogen sulfide
US-2025091864-A1 · Mar 20, 2025 · US
Partial oxidation sulfur technology (post)
US-2024228271-A9 · Jul 11, 2024 · US
Partial oxidation sulfur technology (post)
US-2024132345-A1 · Apr 25, 2024 · US
Adsorption-based Claus tail gas treatment
US-11945716-B2 · Apr 2, 2024 · US
Method for production of elemental sulfur by part or fully catalytic oxidation of Claus tail gas
US-11807527-B2 · Nov 7, 2023 · US
Sulfur recovery unit oxidation air management during SuperClaus to Claus switching
US-11772970-B1 · Oct 3, 2023 · US
Method for production of sulfur and sulfuric acid
US-11691877-B2 · Jul 4, 2023 · US
Adsorption-based claus tail gas treatment
US-2023183066-A1 · Jun 15, 2023 · US
Revamping of a claus plant with a sulfuric acid plan
US-11618677-B2 · Apr 4, 2023 · US
Methods and systems of sub-dew point sulfur recovery with interstage membrane units
US-11530131-B1 · Dec 20, 2022 · US
Thermal stage and reduction absorption sulfur recovery process
US-11453588-B2 · Sep 27, 2022 · US
Method for production of elemental sulfur by part or fully catalytic oxidation of claus tail gas
US-2022234891-A1 · Jul 28, 2022 · US
Method for production of elemental sulfur and sulfuric acid
US-2022227625-A1 · Jul 21, 2022 · US
Membrane process for H2 recovery from sulfur recovery tail gas stream of sulfur recovery units and process for environmentally greener sales gas
US-11383200-B2 · Jul 12, 2022 · US
Revamping of a claus plant with a sulfuric acid plan
US-2022177306-A1 · Jun 9, 2022 · US
Method for production of sulfur and sulfuric acid
US-2022177307-A1 · Jun 9, 2022 · US
Membrane process for h2 recovery from sulfur recovery tail gas stream of sulfur recovery units and process for environmentally greener sales gas
US-2022062818-A1 · Mar 3, 2022 · US
Removal of acid gases from a gas stream, with O2 enrichment for acid gas capture and sequestration
US-11083994-B2 · Aug 10, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B17/0447?
- CPC C01B17/0447 is the Cooperative Patent Classification code for “Separation of the obtained sulfur.”
- How many patents are filed under CPC C01B17/0447 (Separation of the obtained sulfur)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC C01B17/0447 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).