System and method of generating hydrogen gas
US-12559401-B2 · Feb 24, 2026 · US
by oxidation of sulfur compounds · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01B17/508 |
| Official title | {by oxidation of sulfur compounds} |
| Display label | by oxidation of sulfur compounds |
| Total patents | 45 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 1 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 7 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12559401-B2 · Feb 24, 2026 · US
US-2025382173-A1 · Dec 18, 2025 · US
US-12441644-B2 · Oct 14, 2025 · US
US-12428328-B2 · Sep 30, 2025 · US
US-12351453-B2 · Jul 8, 2025 · US
US-2025154005-A1 · May 15, 2025 · US
US-2025066274-A1 · Feb 27, 2025 · US
US-12233397-B2 · Feb 25, 2025 · US
US-2024399293-A1 · Dec 5, 2024 · US
US-12017180-B2 · Jun 25, 2024 · US
US-2024109772-A1 · Apr 4, 2024 · US
US-2024092635-A1 · Mar 21, 2024 · US
US-2023149892-A1 · May 18, 2023 · US
US-2023107975-A1 · Apr 6, 2023 · US
US-2023001349-A1 · Jan 5, 2023 · US
US-11420153-B2 · Aug 23, 2022 · US
US-2022194833-A1 · Jun 23, 2022 · US
US-2022200029-A1 · Jun 23, 2022 · US
US-2022194786-A1 · Jun 23, 2022 · US
US-11104574-B2 · Aug 31, 2021 · US
Answers are generated from the same data shown on this page.