Hydrogen release and storage system, hydrogen release and storage method, ammonia production apparatus, gas turbine, fuel cell, and steel mill
US-12503362-B2 · Dec 23, 2025 · US
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Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C01B3/068 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and processes for the use of calcium- and magnesium-bearing oxides, hydroxides, and silicates; calcium- and magnesium-bearing aqueous streams to capture, convert, and store carbon dioxide and produce hydrogen
US-2025353740-A1 · Nov 20, 2025 · US
Hydrogen production system
US-2024278204-A1 · Aug 22, 2024 · US
Co-production of Hydrogen and Sulfuric Acid by Partial Oxidation of Sulfur
US-2024092635-A1 · Mar 21, 2024 · US
Hydrogen release and storage system, hydrogen release and storage method, ammonia production apparatus, gas turbine, fuel cell, and steel mill
US-2023141693-A1 · May 11, 2023 · US
Methods and processes for the use of calcium- and magnesium-bearing oxides, hydroxides, and silicates; calcium- and magnesium-bearing aqueous streams to capture, convert, and store carbon dioxide and produce hydrogen
US-2023021218-A1 · Jan 19, 2023 · US
Method for producing hydrogen
US-11027971-B2 · Jun 8, 2021 · US
Water decomposition device and method of manufacturing the same
US-11021798-B2 · Jun 1, 2021 · US
Process and plant for producing a converted synthesis gas
US-10919761-B2 · Feb 16, 2021 · US
Process and plant for producing a converted synthesis gas
US-2020165127-A1 · May 28, 2020 · US
Water decomposition device and method of manufacturing the same
US-2020063271-A1 · Feb 27, 2020 · US
Method for producing hydrogen
US-2019233283-A1 · Aug 1, 2019 · US
Hydrogen production process
US-8961922-B2 · Feb 24, 2015 · US
Catalyst for decomposition of sulfur trioxide and hydrogen production process
US-8932555-B2 · Jan 13, 2015 · US