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
Hydrogen fluoride
Hydrogen fluoride · 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 | C01B7/191 |
| Official title | {Hydrogen fluoride} |
| Display label | Hydrogen fluoride |
| Total patents | 75 |
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 | 8 |
| 2017 | 4 |
| 2018 | 18 |
| 2019 | 10 |
| 2020 | 7 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for reducing the concentration of arsenic in an aqueous solution comprising a fluoroacid
US-11639302-B2 · May 2, 2023 · US
Method for producing fluorine gas
US-2022234890-A1 · Jul 28, 2022 · US
Integrated processes for treatment of an ammonium fluorosulfate byproduct of the production of bis(fluorosulfonyl) imide
US-2022212929-A1 · Jul 7, 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
Method for treating sulfur hexafluoride using radiation and apparatus for collecting and treating by-products
US-11058984-B2 · Jul 13, 2021 · US
Sulfuric acid alkylation reactor system and conversion of a hydrogen fluoride alkylation unit to a sulfuric acid alkylation unit
US-2021154640-A1 · May 27, 2021 · US
Method for producing hydrogen fluoride
US-2021147230-A1 · May 20, 2021 · US
Method for producing hydrogen fluoride
US-10934166-B2 · Mar 2, 2021 · US
Azeotropic compositions comprising hydrogen fluoride and fluorocarbons
US-2021047567-A1 · Feb 18, 2021 · US
Azeotropic compositions comprising hydrogen fluoride and fluorocarbons
US-10851303-B2 · Dec 1, 2020 · US
Novel inhibited hydrofluoric acid composition
US-2020317516-A1 · Oct 8, 2020 · US
Atomic layer etching using a boron-containing gas and hydrogen fluoride gas
US-10790156-B2 · Sep 29, 2020 · US
Conversion of a hydrogen fluoride alkylation unit to a sulfuric acid alkylation unit and apparatus utilized therein
US-2020197895-A1 · Jun 25, 2020 · US
Composition comprising HF and 3,3,3-trifluoro-2-chloropropene
US-10596536-B2 · Mar 24, 2020 · US
Azeotropic compositions of hydrogen fluoride and Z-3,3,3-trifluoro-1-chloropropene
US-10590052-B2 · Mar 17, 2020 · US
Composition comprising HF and 3,3,3-trifluoropropene
US-10550054-B2 · Feb 4, 2020 · US
Azeotropic compositions comprising hydrogen fluoride and fluorocarbons
US-10487031-B2 · Nov 26, 2019 · US
Process for Reducing the Concentration of Arsenic in an Aqueous Solution Comprising a Fluoroacid
US-2019270656-A1 · Sep 5, 2019 · US
Atomic layer etching using a boron-containing gas and hydrogen fluoride gas
US-2019267249-A1 · Aug 29, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B7/191?
- CPC C01B7/191 is the Cooperative Patent Classification code for “Hydrogen fluoride.”
- How many patents are filed under CPC C01B7/191 (Hydrogen fluoride)?
- Our database includes 75 publications tagged with this CPC code.
- Is patent activity under CPC C01B7/191 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).