Olefin production method
US-2024391852-A1 · Nov 28, 2024 · US
by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene
by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene · 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 | C07C4/22 |
| Official title | by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene |
| Display label | by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene |
| Total patents | 121 |
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 | 6 |
| 2016 | 1 |
| 2017 | 7 |
| 2018 | 8 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 13 |
| 2023 | 21 |
| 2024 | 27 |
| 2025 | 21 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for upgrading liquefied waste plastics
US-2023357643-A1 · Nov 9, 2023 · US
Methods for integrated separation of dienes
US-2023357653-A1 · Nov 9, 2023 · US
Circular economy for plastic waste to polypropylene and base oil via refinery hydrocracking unit
US-2023313052-A1 · Oct 5, 2023 · US
Circular economy for plastic waste to polyethylene via refinery fcc unit
US-2023312862-A1 · Oct 5, 2023 · US
Circular economy for plastic waste to polyethylene and lubricating oil via crude and isomerization dewaxing units
US-11739272-B2 · Aug 29, 2023 · US
Recycle content polypropylene
US-2023134198-A1 · May 4, 2023 · US
Circular economy for plastic waste to polyethylene via refinery fcc and alkylation units
US-2023079004-A1 · Mar 16, 2023 · US
Depolymerization of oligomers and polymers comprising cyclobutane units
US-2023059241-A1 · Feb 23, 2023 · US
Circular economy for plastic waste to polyethylene and lubricating oil via crude and isomerization dewaxing units
US-2023048572-A1 · Feb 16, 2023 · US
Method for the depolymerisation of polystyrene in the presence of foreign polymers
US-2022411351-A1 · Dec 29, 2022 · US
Circular economy for plastic waste to polyethylene via refinery FCC and alkylation units
US-11518944-B2 · Dec 6, 2022 · US
Selective 1-hexene/1-octene production with 1-decene
US-11498889-B1 · Nov 15, 2022 · US
Circular economy for plastic waste to polyethylene and lubricating oil via crude and isomerization dewaxing units
US-11473016-B2 · Oct 18, 2022 · US
Process for the depolymerisation of polystyrene
US-2022324777-A1 · Oct 13, 2022 · US
Stabilizer additives for plastic-derived synthetic feedstock
US-2022289648-A1 · Sep 15, 2022 · US
Method of decomposing phenolic by-product
US-2022251012-A1 · Aug 11, 2022 · US
Processes and systems for producing one or more of benzene, toluene, or mixed xylenes
US-11370973-B2 · Jun 28, 2022 · US
Conversion of plastics to monomers by acidic catalytic pyrolysis
US-2022195140-A1 · Jun 23, 2022 · US
Styrene-assisted depolymerization of polyolefins
US-2022112352-A1 · Apr 14, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C4/22?
- CPC C07C4/22 is the Cooperative Patent Classification code for “by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene.”
- How many patents are filed under CPC C07C4/22 (by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene)?
- Our database includes 121 publications tagged with this CPC code.
- Is patent activity under CPC C07C4/22 growing?
- Publication counts under this code: 27 in 2024 vs 21 in 2025 (latest complete years).