Method for production of elemental sulfur and sulfuric acid
US-12545580-B2 · Feb 10, 2026 · US
the hydrogen sulfide-containing gas being a Claus process tail gas
the hydrogen sulfide-containing gas being a Claus process tail gas · 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 | C01B17/0456 |
| Official title | {the hydrogen sulfide-containing gas being a Claus process tail gas} |
| Display label | the hydrogen sulfide-containing gas being a Claus process tail gas |
| Total patents | 58 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 2 |
| 2017 | 10 |
| 2018 | 6 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 8 |
| 2023 | 8 |
| 2024 | 5 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Comproportionation-based autocatalytic cycles and related methods
US-2025382173-A1 · Dec 18, 2025 · US
Sulfur Recovery Unit to Convert Hydrogen Sulfide to Elemental Sulfur
US-2024391771-A1 · Nov 28, 2024 · 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
Removal of Sulfur Compounds from Gas
US-2024109776-A1 · Apr 4, 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
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
Sulfur recovery by solidifying sulfur on reactor catalyst
US-11655149-B1 · May 23, 2023 · US
Sulfur Recovery by Solidifying Sulfur on Reactor Catalyst
US-2023139298-A1 · May 4, 2023 · US
Enhanced tail gas treatment of sulfur recovery unit with steam swept membranes
US-11638898-B1 · May 2, 2023 · US
Revamping of a claus plant with a sulfuric acid plan
US-11618677-B2 · Apr 4, 2023 · US
Treating sulfur dioxide containing stream by acid aqueous absorption
US-11548784-B1 · Jan 10, 2023 · 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
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B17/0456?
- CPC C01B17/0456 is the Cooperative Patent Classification code for “the hydrogen sulfide-containing gas being a Claus process tail gas.”
- How many patents are filed under CPC C01B17/0456 (the hydrogen sulfide-containing gas being a Claus process tail gas)?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC C01B17/0456 growing?
- Publication counts under this code: 5 in 2024 vs 1 in 2025 (latest complete years).