Plant for production of hydrogen and method for operating this plant
US-10486968-B2 · Nov 26, 2019 · US
Three or more purification steps in series
Three or more purification steps in series · 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 | C01B2203/147 |
| Official title | Three or more purification steps in series |
| Display label | Three or more purification steps in series |
| Total patents | 131 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 17 |
| 2017 | 11 |
| 2018 | 11 |
| 2019 | 10 |
| 2020 | 6 |
| 2021 | 7 |
| 2022 | 12 |
| 2023 | 16 |
| 2024 | 14 |
| 2025 | 13 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for producing ammonia synthesis gas
US-10464818-B2 · Nov 5, 2019 · US
Method and system for obtaining hydrogen from a feed mixture which contains hydrogen and hydrocarbons
US-10464810-B2 · Nov 5, 2019 · US
Process and plant for the purification of raw synthesis gas
US-10391443-B2 · Aug 27, 2019 · US
Conditioned syngas composition, method of making same and method of processing same to produce fuels and/or fischer-tropsch products
US-2019210873-A1 · Jul 11, 2019 · US
Method of producing sulfur-depleted syngas
US-2019210874-A1 · Jul 11, 2019 · US
Process and apparatus for the production of CO and CO2
US-10302357-B2 · May 28, 2019 · US
Unconditioned syngas composition and method of cleaning up same for fischer-tropsch processing
US-10280081-B2 · May 7, 2019 · US
Method for converting biomass into fischer-tropsch products with carbon dioxide recycling
US-10214418-B2 · Feb 26, 2019 · US
Unconditioned syngas composition and method of cleaning up same for fischer-tropsch processing
US-2019010050-A1 · Jan 10, 2019 · US
Process for purifying synthesis gas by washing with aqueous solutions of amines
US-10118824-B2 · Nov 6, 2018 · US
Process and plant for producing synthesis gas with variable composition
US-2018282159-A1 · Oct 4, 2018 · US
Method for syngas clean-up of semi-volatile organic compounds with solids removal
US-10065858-B2 · Sep 4, 2018 · US
Method and system for obtaining hydrogen from a feed mixture which contains hydrogen and hydrocarbons
US-2018186632-A1 · Jul 5, 2018 · US
Method for syngas clean-up of semi-volatile organic compounds with carbonyl sulfide removal
US-10011483-B2 · Jul 3, 2018 · US
Method for syngas clean-up of semi-volatile organic compounds with metal removal
US-10011482-B2 · Jul 3, 2018 · US
Apparatus and process for treating natural gas
US-10010858-B2 · Jul 3, 2018 · US
Process for producing ammonia synthesis gas
US-2018072580-A1 · Mar 15, 2018 · US
Cryogenic separation of synthesis gas
US-9909803-B2 · Mar 6, 2018 · US
Method for converting biomass into fischer-tropsch products with carbon dioxide recycling
US-2018050909-A1 · Feb 22, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B2203/147?
- CPC C01B2203/147 is the Cooperative Patent Classification code for “Three or more purification steps in series.”
- How many patents are filed under CPC C01B2203/147 (Three or more purification steps in series)?
- Our database includes 131 publications tagged with this CPC code.
- Is patent activity under CPC C01B2203/147 growing?
- Publication counts under this code: 14 in 2024 vs 13 in 2025 (latest complete years).