Integration of steam cracker and blue ammonia units to reduce co2 emission
US-2025034458-A1 · Jan 30, 2025 · US
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Purification
Purification · 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 | C01C1/024 |
| Official title | {Purification} |
| Display label | Purification |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for removing inert gas from liquid ammonia
US-12138564-B2 · Nov 12, 2024 · US
System for recovering inert gases from an ammonia synthesis loop and method thereof
US-2024317595-A1 · Sep 26, 2024 · US
Methods using ligand insertion mechanism for ammonia capture and storage in metal-organic frameworks
US-2024261720-A1 · Aug 8, 2024 · US
Method for recovering ammonia
US-2024158248-A1 · May 16, 2024 · US
Method for heating a feed of natural gas to a steam reformer and system and use thereof
US-2023357032-A1 · Nov 9, 2023 · US
System for ammonia distillation
US-11485645-B2 · Nov 1, 2022 · US
Cleaning method of semiconductor structure
US-2022199394-A1 · Jun 23, 2022 · US
Method for removing inert gas from liquid ammonia
US-2022023775-A1 · Jan 27, 2022 · US
Process for the co-production of methanol and ammonia in parallel
US-11124424-B2 · Sep 21, 2021 · US
Ammonia solution production device and ammonia solution production method
US-11104594-B2 · Aug 31, 2021 · US
Process for the co-production of methanol and ammonia
US-11053130-B2 · Jul 6, 2021 · US
Process for the co-production of methanol and ammonia in parallel
US-2020207632-A1 · Jul 2, 2020 · US
Process for the co-production of methanol and ammonia
US-2020156953-A1 · May 21, 2020 · US
Process for integrated production of urea and urea-ammonium nitrate
US-10550075-B2 · Feb 4, 2020 · US
Ammonia solution production device and ammonia solution production method
US-2019367391-A1 · Dec 5, 2019 · US
A process for integrated production of urea and urea-ammonium nitrate
US-2019359558-A1 · Nov 28, 2019 · US
Method for preparing alpha-hydroxycarboxylic acid esters in which ammonia is recycled
US-10227284-B2 · Mar 12, 2019 · US
System and method for ammonia distillation
US-2018257944-A1 · Sep 13, 2018 · US
System and method for recovering ammonia from a gas stream
US-2018178160-A1 · Jun 28, 2018 · US