Method for preparing hydrogen gas
US-12275639-B2 · Apr 15, 2025 · US
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Methods of heating or cooling
Methods of heating or cooling · 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 | C01B2203/08 |
| Official title | Methods of heating or cooling |
| Display label | Methods of heating or cooling |
| Total patents | 12 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aluminium combustion for heat generation
US-12135127-B2 · Nov 5, 2024 · US
Method for preparing hydrogen gas
US-2023286800-A1 · Sep 14, 2023 · US
Aluminium combustion for heat generation
US-2022214039-A1 · Jul 7, 2022 · US
Hydrogen production apparatus and hydrogen production method
US-9776862-B2 · Oct 3, 2017 · US
Isothermal tubular catalytic reactor
US-2017028373-A1 · Feb 2, 2017 · US
Hydrogen production apparatus and hydrogen production method
US-2016251217-A1 · Sep 1, 2016 · US
Process for the conversion of a hydrocarbon feedstock into a synthesis gas
US-9409774-B2 · Aug 9, 2016 · US
Chemical looping method for the combustion of heavy liquid hydrocarbon fractions
US-9297528-B2 · Mar 29, 2016 · US
Process for the conversion of a hydrocarbon feedstock into a synthesis gas
US-2015284248-A1 · Oct 8, 2015 · US
Fischer-tropsch process
US-9029429-B2 · May 12, 2015 · US
Process and apparatus for the parallel production of different synthesis gases
US-2015115203-A1 · Apr 30, 2015 · US