Method for producing fluorine gas
US-12358796-B2 · Jul 15, 2025 · US
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Fluorine; Hydrogen fluoride
Fluorine; 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 | C01B7/19 |
| Official title | Fluorine; Hydrogen fluoride |
| Display label | Fluorine; Hydrogen fluoride |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for measuring concentration of fluorine gas in halogen fluoride-containing gas using mass spectrometer
US-11984308-B2 · May 14, 2024 · US
Method for producing hydrogen fluoride
US-11718523-B2 · Aug 8, 2023 · US
Method for producing fluorine gas
US-2022234890-A1 · Jul 28, 2022 · US
Method for measuring concentration of fluorine gas in halogen fluoride-containing gas using mass spectrometer
US-2022223397-A1 · Jul 14, 2022 · US
Treatment of fluoride-containing wastewater
US-11286189-B2 · Mar 29, 2022 · 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
Process for the synthesis of IZM-2 zeolite in the presence of a template, 1,6-bis(methylpiperidinium)hexane dihydroxide
US-10865116-B2 · Dec 15, 2020 · US
Treatment of Fluoride-Containing Wastewater
US-2020317553-A1 · Oct 8, 2020 · US
Composition comprising HF and 3,3,3-trifluoropropene
US-10550054-B2 · Feb 4, 2020 · 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
Etching solution capable of suppressing particle appearance
US-10167425-B2 · Jan 1, 2019 · US
Process for the synthesis of izm-2 zeolite in the presence of a template, 1,6-bis(methylpiperidinium)hexane dihydroxide
US-2018273391-A1 · Sep 27, 2018 · 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
Etching solution capable of suppressing particle appearance
US-2017321121-A1 · Nov 9, 2017 · US
Method of recycling hydrochloric and hydrofluoric acid effluent
US-9783427-B2 · Oct 10, 2017 · US
Method for producing hydrogen fluoride
US-2017158506-A1 · Jun 8, 2017 · US
Composition comprising hf and 3,3,3-trifluoropropene
US-2016046548-A1 · Feb 18, 2016 · US