Method for producing bisphenol and method for producing recycled polycarbonate resin
US-2025340712-A1 · Nov 6, 2025 · US
by splitting polyaromatic compounds, e.g. polyphenolalkanes
by splitting polyaromatic compounds, e.g. polyphenolalkanes · 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 | C07C37/52 |
| Official title | by splitting polyaromatic compounds, e.g. polyphenolalkanes |
| Display label | by splitting polyaromatic compounds, e.g. polyphenolalkanes |
| Total patents | 55 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 11 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid catalytic cracking of p-cresol dimer into phenolic monomers and process thereof
US-12275695-B2 · Apr 15, 2025 · US
Composition containing bisphenol, production method for same, production method for bisphenol a, and production method for polycarbonate resin
US-2025043073-A1 · Feb 6, 2025 · US
Process for preparing cresol from ditolylether
US-2024409485-A1 · Dec 12, 2024 · US
Hydrodearylation reactor
US-12161987-B2 · Dec 10, 2024 · US
Method for decomposing phenol-based by-product
US-12084408-B2 · Sep 10, 2024 · US
Method of decomposing phenolic by-products
US-11993564-B2 · May 28, 2024 · US
Base-mediated method for the recycling of epoxy resin-carbon fiber composites
US-2024158603-A1 · May 16, 2024 · US
Method for decomposing phenolic by-product
US-11939282-B2 · Mar 26, 2024 · US
Monomer composition for synthesizing recycled plastic, preparation method thereof, and recycled plastic, molded product using the same
US-2024002627-A1 · Jan 4, 2024 · US
Phenol recovery of bisphenol-a mother liquor purge using purification train in the phenol production unit
US-2023406797-A1 · Dec 21, 2023 · US
Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same
US-2023391702-A1 · Dec 7, 2023 · US
Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same
US-2023382837-A1 · Nov 30, 2023 · US
Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same
US-2023383089-A1 · Nov 30, 2023 · US
Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same
US-2023383090-A1 · Nov 30, 2023 · US
Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same
US-2023374251-A1 · Nov 23, 2023 · US
Method for producing bisphenol a and method for producing polycarbonate resin
US-2023340196-A1 · Oct 26, 2023 · US
Method of decomposing phenolic by-product
US-11780796-B2 · Oct 10, 2023 · US
Fluid catalytic cracking of p-cresol dimer into phenolic monomers and process thereof
US-2023202953-A1 · Jun 29, 2023 · US
Method of decomposing by-product in phenol preparation process
US-11547951-B2 · Jan 10, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C37/52?
- CPC C07C37/52 is the Cooperative Patent Classification code for “by splitting polyaromatic compounds, e.g. polyphenolalkanes.”
- How many patents are filed under CPC C07C37/52 (by splitting polyaromatic compounds, e.g. polyphenolalkanes)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC C07C37/52 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).