Method for producing low-molecular-weight fluorine compound
US-2026049196-A1 · Feb 19, 2026 · US
Tetrafluoroethene
Tetrafluoroethene · 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 | C07C21/185 |
| Official title | Tetrafluoroethene |
| Display label | Tetrafluoroethene |
| Total patents | 38 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 6 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing low-molecular-weight fluorine compound
US-2025043096-A1 · Feb 6, 2025 · US
Upcycling perfluoropolymers into fluorinated olefins
US-11795126-B2 · Oct 24, 2023 · US
Storage method for hydrochlorofluoroolefin, and storage container for hydrochlorofluoroolefin
US-11525543-B2 · Dec 13, 2022 · US
Method for producing tetrafluoroethylene and/or hexafluoropropylene
US-11427520-B2 · Aug 30, 2022 · US
Separation method for halogenated unsaturated carbon compound
US-11053180-B2 · Jul 6, 2021 · US
Method for producing tetrafluoroethylene and/or hexafluoropropylene
US-2021070679-A1 · Mar 11, 2021 · US
Process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf)
US-10899686-B2 · Jan 26, 2021 · US
Method for storing tetrafluoropropene and container for storing tetrafluoropropene
US-2020346999-A1 · Nov 5, 2020 · US
Method for storing tetrafluoropropene and container for storing tetrafluoropropene
US-10759725-B2 · Sep 1, 2020 · US
Separation method for halogenated unsaturated carbon compound
US-2020239389-A1 · Jul 30, 2020 · US
Storage method for hydrochlorofluoroolefin, and storage container for hydrochlorofluoroolefin
US-2020224822-A1 · Jul 16, 2020 · US
Process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf)
US-2020165179-A1 · May 28, 2020 · US
Separation method for halogenated unsaturated carbon compound
US-10654775-B2 · May 19, 2020 · US
Liquid phase process for preparing (E)-1,1,1,4,4,4-hexafluorobut-2-ene
US-10611709-B2 · Apr 7, 2020 · US
Method for storing tetrafluoropropene and container for storing tetrafluoropropene
US-2020002254-A1 · Jan 2, 2020 · US
Method for storing tetrafluoropropene and container for storing tetrafluoropropene
US-10442745-B2 · Oct 15, 2019 · US
Process and apparatus for producing fluorinated alkenes
US-10358402-B2 · Jul 23, 2019 · US
Method for storing tetrafluoropropene and container for storing tetrafluoropropene
US-2019218163-A1 · Jul 18, 2019 · US
Method for storing tetrafluoropropene and container for storing tetrafluoropropene
US-10280129-B2 · May 7, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C21/185?
- CPC C07C21/185 is the Cooperative Patent Classification code for “Tetrafluoroethene.”
- How many patents are filed under CPC C07C21/185 (Tetrafluoroethene)?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC C07C21/185 growing?
- Publication counts under this code: 1 in 2023 vs 1 in 2025 (latest complete years).