Method for producing hydrogen fluoride
US-11718523-B2 · Aug 8, 2023 · US
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Preparation from fluorspar
Preparation from fluorspar · 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 | C01B7/192 |
| Official title | {Preparation from fluorspar} |
| Display label | Preparation from fluorspar |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 3 |
| 2021 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing hydrogen fluoride
US-2021147230-A1 · May 20, 2021 · US
Method for producing hydrogen fluoride
US-10934166-B2 · Mar 2, 2021 · US
Method for the production of free flowing synthetic calcium fluoride and use thereof
US-9764963-B2 · Sep 19, 2017 · US
Method for producing hydrogen fluoride
US-2017158506-A1 · Jun 8, 2017 · US
Method for producing hydrogen fluoride
US-9656864-B2 · May 23, 2017 · US
Method for the Production of Free Flowing Synthetic Calcium Fluoride and Use thereof
US-2015353372-A1 · Dec 10, 2015 · US