Process for the purification of waste plastics based oil with the help of basic compounds
US-12577471-B2 · Mar 17, 2026 · US
of dienes or alkynes
of dienes or alkynes · 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 | C07C2/38 |
| Official title | of dienes or alkynes |
| Display label | of dienes or alkynes |
| Total patents | 26 |
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 | 1 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2024 | 3 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for the recycling of waste plastics based oil
US-12503653-B2 · Dec 23, 2025 · US
Oligomeric Product Made Out of Pyrolysis Oil Via a Polymerization
US-2025304513-A1 · Oct 2, 2025 · US
Production of ethylene and propylene from pyrolysis plastic oil
US-12421457-B2 · Sep 23, 2025 · US
Process for the recycling and cracking waste plastics based oil
US-12404459-B2 · Sep 2, 2025 · US
Production of ethylene and propylene from pyrolysis plastic oil
US-2025263352-A1 · Aug 21, 2025 · US
Rubber product made out of pyrolysis oil via a polymerization
US-2025263535-A1 · Aug 21, 2025 · US
Adhesive product made out of pyrolysis oil via a polymerization
US-2025263585-A1 · Aug 21, 2025 · US
Purification of waste plastics based oil via a polymerization
US-2025257198-A1 · Aug 14, 2025 · US
Process for the recycling of waste plastics based oil
US-2025257273-A1 · Aug 14, 2025 · US
Process for the recycling and cracking waste plastics based oil
US-2025171696-A1 · May 29, 2025 · US
Process For The Purification Of Waste Plastics Based Oil With The Help Of Basic Compounds
US-2025171695-A1 · May 29, 2025 · US
Dimerization of cyclopentadiene from side stream from debutanizer
US-12168638-B2 · Dec 17, 2024 · US
Dimerization of cyclopentadiene from side stream from debutanizer
US-2024116837-A1 · Apr 11, 2024 · US
Dimerization of cyclopentadiene from side stream from debutanizer
US-11884608-B2 · Jan 30, 2024 · US
Method to produce C4 olefins from natural gas-derived acetylene
US-11530171-B2 · Dec 20, 2022 · US
Dimerization of cyclopentadiene from side stream from debutanizer
US-2022340501-A1 · Oct 27, 2022 · US
Method to produce c4 olefins from natural gas-derived acetylene
US-2021323893-A1 · Oct 21, 2021 · US
Heterogenized catalyst for acetylene dimerization
US-10668455-B2 · Jun 2, 2020 · US
Preparation method for conjugated diene compound
US-2020048162-A1 · Feb 13, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C2/38?
- CPC C07C2/38 is the Cooperative Patent Classification code for “of dienes or alkynes.”
- How many patents are filed under CPC C07C2/38 (of dienes or alkynes)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC C07C2/38 growing?
- Publication counts under this code: 3 in 2024 vs 11 in 2025 (latest complete years).