Methods for recovering hydrogen fluoride from a fluorocarbon production process
US-2025197215-A1 · Jun 19, 2025 · US
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by distillation
by distillation · 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 | C01B7/196 |
| Official title | {by distillation} |
| Display label | by distillation |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Azeotropic or azeotropic-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane, 1-chloro-2,2-difluoroethane, or 1,2-dichloro-1-fluoroethane
US-12251590-B2 · Mar 18, 2025 · US
Azeotrope-like composition containing 1,2-difluoroethylene or 1,1,2-trifluoroethylene and hydrogen fluoride
US-12036491-B2 · Jul 16, 2024 · US
Converting fluorinated materials into anhydrous hydrogen fluoride
US-11905178-B2 · Feb 20, 2024 · US
Azeotropic or azeotropic-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane, 1-chloro-2,2-difluoroethane, or 1,2-dichloro-1-fluoroethane
US-2024050792-A1 · Feb 15, 2024 · US
Converting fluorinated materials into anhydrous hydrogen fluoride
US-2024002228-A1 · Jan 4, 2024 · US
Azeotropic or azeotropic-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane, 1-chloro-2,2-difluoroethane, or 1,2-dichloro-1-fluoroethane
US-11826596-B2 · Nov 28, 2023 · US
Integrated processes for treatment of an ammonium fluorosulfate byproduct of the production of bis (fluorosulfonyl) imide
US-11772967-B2 · Oct 3, 2023 · US
Integrated processes for treatment of an ammonium fluorosulfate byproduct of the production of bis(fluorosulfonyl) imide
US-2022212929-A1 · Jul 7, 2022 · US
Production device and production method of electronic grade hydrofluoric acid
US-11325063-B2 · May 10, 2022 · US
Azeotropic or azeotropic-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane, 1-chloro-2,2-difluoroethane, or 1,2-dichloro-1-fluoroethane
US-2022023693-A1 · Jan 27, 2022 · US
Azeotrope-like composition containing 1,2-difluoroethylene or 1,1,2-trifluoroethylene and hydrogen fluoride
US-2021346820-A1 · Nov 11, 2021 · US
Production device and production method of electronic grade hydrofluoric acid
US-2021008489-A1 · Jan 14, 2021 · US
Systems and methods for separating (e)-1-chloro-3,3,3-trifluoropropene, hf, and a heavy organic and reactor purge
US-2019352242-A1 · Nov 21, 2019 · US
Method for producing chloropropene and method for producing 2,3,3,3-tetrafluoropropene
US-10173952-B2 · Jan 8, 2019 · US
Systems and methods for separating (e)-1-chloro-3,3,3-trifluoropropene, hf, and a heavy organic and reactor purge
US-2018194703-A1 · Jul 12, 2018 · US
Method of recycling hydrochloric and hydrofluoric acid effluent
US-9783427-B2 · Oct 10, 2017 · US
Method for producing chloropropene and method for producing 2,3,3,3-tetrafluoropropene
US-2017217859-A1 · Aug 3, 2017 · US
Method for separating hf from hf/halogenated hydrocarbon mixtures using ionic liquids
US-2016107892-A1 · Apr 21, 2016 · US
Processes for separation of fluoroolefins from hydrogen fluoride by azeotropic distillation
US-9000238-B2 · Apr 7, 2015 · US