Method for producing oligomers for producing polycarbonates
US-2018371163-A1 · Dec 27, 2018 · US
Carbonates
Carbonates · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J27/232 |
| Official title | Carbonates |
| Display label | Carbonates |
| Total patents | 181 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 18 |
| 2017 | 15 |
| 2018 | 16 |
| 2019 | 18 |
| 2020 | 20 |
| 2021 | 15 |
| 2022 | 20 |
| 2023 | 14 |
| 2024 | 12 |
| 2025 | 15 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A solvent-free melt polycondensation process of making furan-based polyamides
US-2018371167-A1 · Dec 27, 2018 · US
Carboxylic acid ester production method
US-2018354885-A1 · Dec 13, 2018 · US
Particulate filter provided with catalyst and method for manufacturing said filter
US-10105627-B2 · Oct 23, 2018 · US
Method for producing hydrosilyl group-containing organic silicon resin
US-2018298148-A1 · Oct 18, 2018 · US
Modification of layered double hydroxides
US-10065172-B2 · Sep 4, 2018 · US
Method of producing graphene from a hydrocarbon gas and liquid metal catalysts
US-10059591-B2 · Aug 28, 2018 · US
Spray-dried butynediol catalysts
US-2018236439-A1 · Aug 23, 2018 · US
Preparation of polyglycerols
US-9956547-B2 · May 1, 2018 · US
Methods and materials for direct nox decomposition in lean exhaust gases
US-2017312742-A1 · Nov 2, 2017 · US
Method for producing trifluoroethylene
US-9802878-B2 · Oct 31, 2017 · US
Catalyst system for preparing propylene oxide
US-2017298034-A1 · Oct 19, 2017 · US
Process for preparing propylene oxide
US-9738616-B2 · Aug 22, 2017 · US
Silver-cerium oxide composite catalyst supported on an alkaline carrier and method for producing the same
US-9707544-B2 · Jul 18, 2017 · US
Method for producing aldehyde
US-9688597-B2 · Jun 27, 2017 · US
Catalyst composition for producing hydrocarbons and method for producing hydrocarbons
US-2017175003-A1 · Jun 22, 2017 · US
Catalyst composition for producing hydrocarbons and method for producing hydrocarbons
US-9656252-B2 · May 23, 2017 · US
Hydrogenation Catalyst And Method For Producing Same
US-2017113209-A1 · Apr 27, 2017 · US
Catalyst with improved hydrothermal stability
US-9611774-B2 · Apr 4, 2017 · US
Hydrocarbon Conversion
US-2017088490-A1 · Mar 30, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J27/232?
- CPC B01J27/232 is the Cooperative Patent Classification code for “Carbonates.”
- How many patents are filed under CPC B01J27/232 (Carbonates)?
- Our database includes 181 publications tagged with this CPC code.
- Is patent activity under CPC B01J27/232 growing?
- Publication counts under this code: 12 in 2024 vs 15 in 2025 (latest complete years).