Treatment process for crystallizing a metal sulfate
US-2026070803-A1 · Mar 12, 2026 · US
Fluorides
Fluorides · 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 | C01F5/28 |
| Official title | Fluorides |
| Display label | Fluorides |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing nickel sulfate
US-2026055007-A1 · Feb 26, 2026 · US
Protection of optical materials of optical components from radiation degradation
US-12510692-B2 · Dec 30, 2025 · US
Window module and display device including the same
US-12487377-B2 · Dec 2, 2025 · US
Treatment process for crystallizing a metal sulfate
US-12441621-B2 · Oct 14, 2025 · US
Negative electrode active material for fluoride-ion battery and method for manufacturing thereof, negative electrode mixture, and fluoride-ion battery
US-2025230054-A1 · Jul 17, 2025 · US
Imitation ceramic structure, preparation method therefor, and electronic device housing
US-2025227862-A1 · Jul 10, 2025 · US
Anode material and fluoride ion battery
US-12288882-B2 · Apr 29, 2025 · US
Salt hydrate compositions for thermal energy storage systems
US-2025066658-A1 · Feb 27, 2025 · US
Fluoride-ion battery, negative electrode active material for fluoride-ion battery, and method for manufacturing negative electrode active material for fluoride-ion battery
US-2024322161-A1 · Sep 26, 2024 · US
Anode material and fluoride ion battery
US-2024250263-A1 · Jul 25, 2024 · US
Anode material and fluoride ion battery
US-12002959-B2 · Jun 4, 2024 · US
Method and apparatus for treating wastewater
US-2024173671-A1 · May 30, 2024 · US
Positive electrolyte active material for secondary battery, preparation method thereof, and lithium secondary battery including same
US-11876157-B2 · Jan 16, 2024 · US
Optical lens with antireflective film, projection lens, and projection lens optical system
US-11846754-B2 · Dec 19, 2023 · US
Window module and display device including the same
US-2023244002-A1 · Aug 3, 2023 · US
Anode material and fluoride ion battery
US-2022263083-A1 · Aug 18, 2022 · US
Salt hydrate compositions for thermal energy storage systems
US-2022259479-A1 · Aug 18, 2022 · US
Corrosion-resistant member
US-2022195605-A1 · Jun 23, 2022 · US
Protection of optical materials of optical components from radiation degradation
US-2022066071-A1 · Mar 3, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01F5/28?
- CPC C01F5/28 is the Cooperative Patent Classification code for “Fluorides.”
- How many patents are filed under CPC C01F5/28 (Fluorides)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC C01F5/28 growing?
- Publication counts under this code: 5 in 2024 vs 7 in 2025 (latest complete years).