Polycarbonate Resin and Method for Preparing Same
US-2024150521-A1 · May 9, 2024 · US
General preparatory processes
General preparatory processes · 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 | C08G64/20 |
| Official title | General preparatory processes |
| Display label | General preparatory processes |
| Total patents | 93 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 19 |
| 2017 | 16 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 10 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing highly transparent and highly heat-resistant polycarbonate ester
US-10479860-B2 · Nov 19, 2019 · US
Metal complex compound, and metal nanostructure and catalyst composition comprising the same
US-10406515-B2 · Sep 10, 2019 · US
Method for preparing polycarbonate
US-2019085122-A1 · Mar 21, 2019 · US
Polycarbonate resin, method for producing polycarbonate resin, coating liquid, electrophotographic photoreceptor, and electrophotography device
US-2019085120-A1 · Mar 21, 2019 · US
Aromatic polycarbonate resin composition and aromatic polycarbonate resin manufacturing method
US-2019085123-A1 · Mar 21, 2019 · US
Thermoplastic resin composition having excellent thermal stability and low birefringence and molded atricle thereof
US-2019055401-A1 · Feb 21, 2019 · US
Enhanced polycarbonate extrusion grades
US-10150855-B2 · Dec 11, 2018 · US
Organic zinc catalyst, preparation method thereof, and method of preparing poly(alkylene carbonate) resin using the same
US-10100147-B2 · Oct 16, 2018 · US
High-fluidity polycarbonate copolymer, process for production highly polymerized aromatic polycarbonate resin and aromatic polycarbonate compound
US-10053537-B2 · Aug 21, 2018 · US
Highly Heat-Resistant And Highly Transparent Polycarbonate Ester, And Preparation Method Therefor
US-2018223041-A1 · Aug 9, 2018 · US
Control of organic impurities in polycarbonate synthesis
US-2018208746-A1 · Jul 26, 2018 · US
Highly heat-resistant and highly transparent polycarbonate ester, and preparation method therefor
US-9975991-B2 · May 22, 2018 · US
Highly heat-resistant and highly transparent polycarbonate ester, and preparation method therefor
US-9963543-B2 · May 8, 2018 · US
Metal complex compound, and metal nanostructure and catalyst composition comprising the same
US-2017368543-A1 · Dec 28, 2017 · US
Novel method for preparing highly transparent and highly heat-resistant polycarbonate ester
US-2017369641-A1 · Dec 28, 2017 · US
Polysiloxane-polycarbonate block cocondensates
US-9845379-B2 · Dec 19, 2017 · US
Process for preparing polysiloxane-polycarbonate block cocondensates
US-9845378-B2 · Dec 19, 2017 · US
Preparation of siloxane-containing block copolycarbonates by means of reactive extrusion
US-9828462-B2 · Nov 28, 2017 · US
Method for preparing polycarbonate-polyorganosiloxane copolymer
US-2017313824-A1 · Nov 2, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G64/20?
- CPC C08G64/20 is the Cooperative Patent Classification code for “General preparatory processes.”
- How many patents are filed under CPC C08G64/20 (General preparatory processes)?
- Our database includes 93 publications tagged with this CPC code.
- Is patent activity under CPC C08G64/20 growing?
- Publication counts under this code: 6 in 2023 vs 6 in 2024 (latest complete years).