System and method of generating hydrogen gas
US-12559401-B2 · Feb 24, 2026 · US
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Preparation by reduction of oxidic sulfur compounds
Preparation by reduction of oxidic sulfur compounds · 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 | C01B17/164 |
| Official title | {Preparation by reduction of oxidic sulfur compounds} |
| Display label | Preparation by reduction of oxidic sulfur compounds |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2018 | 3 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Processes to Clean Tail Gas from Carbon Black Production and System and Facility for Same
US-2025367600-A1 · Dec 4, 2025 · US
System and method of generating electricity in a body of water
US-12441644-B2 · Oct 14, 2025 · US
System and method of separating oxygen from a body of water
US-12428328-B2 · Sep 30, 2025 · US
Composite material and use thereof in desulfurization
US-12233397-B2 · Feb 25, 2025 · US
Molecular sieve complex, composite material and application thereof
US-12233396-B2 · Feb 25, 2025 · US
Desulfurization of Carbon Dioxide-containing Gases
US-2024001288-A1 · Jan 4, 2024 · US
Composite material and use thereof in desulfurization
US-2023149892-A1 · May 18, 2023 · US
Molecular sieve complex, composite material and application thereof
US-2023149891-A1 · May 18, 2023 · 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
System and Method of Separating Oxygen from A Body of Water
US-2022194833-A1 · Jun 23, 2022 · US
System and Method of Generating Electricity in A Body of Water
US-2022200029-A1 · Jun 23, 2022 · US
System and Method of Generating Hydrogen Gas
US-2022194786-A1 · Jun 23, 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
Process for oxidative desulfurization and sulfone management by gasification
US-10035960-B2 · Jul 31, 2018 · US
Enhancement of claus tail gas treatment with membrane and reducing step
US-9943802-B1 · Apr 17, 2018 · US
Systems and methods for improved sulfur recovery from claus process tail gas
US-9884291-B2 · Feb 6, 2018 · US
Process for oxidative desulfurization and sulfone management by gasification
US-2017130141-A1 · May 11, 2017 · US
Systems and methods for improved sulfur recovery from claus process tail gas
US-2017036163-A1 · Feb 9, 2017 · US