Method for assembling polycarbonate manufacturing apparatus and polycarbonate manufacturing apparatus
US-2024165577-A1 · May 23, 2024 · US
characterised by the apparatus used
characterised by the apparatus used · 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 | C08G64/205 |
| Official title | {characterised by the apparatus used} |
| Display label | characterised by the apparatus used |
| Total patents | 72 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 8 |
| 2017 | 7 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 7 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 2 |
| 2024 | 10 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ring-opening polymerizations using a flow reactor
US-11807715-B2 · Nov 7, 2023 · US
Semi-batch process for making polycarbonate polyols via copolymerization of carbon dioxide and an oxirane
US-11566105-B2 · Jan 31, 2023 · US
Polycarbonate ester and preparation method therefor
US-11535705-B2 · Dec 27, 2022 · US
Method for producing polycarbonate
US-11459424-B2 · Oct 4, 2022 · US
Continuous manufacturing of polyol
US-2022220252-A1 · Jul 14, 2022 · US
Production plant for producing a chemical product by reacting H-functional reactants with phosgene, and method for operating same with an interruption to production
US-11365172-B2 · Jun 21, 2022 · US
Ring-opening polymerizations using a flow reactor
US-11286341-B2 · Mar 29, 2022 · US
Polymer technology for use in flow reactors
US-11279798-B2 · Mar 22, 2022 · US
Method for producing polycarbonate
US-2021371585-A1 · Dec 2, 2021 · US
Ring-opening polymerizations using a flow reactor
US-2021371583-A1 · Dec 2, 2021 · US
Polycarbonate based polyols
US-11174348-B2 · Nov 16, 2021 · US
Polycarbonate
US-2021347939-A1 · Nov 11, 2021 · US
Polycarbonate based polyols
US-2021347940-A1 · Nov 11, 2021 · US
Polymer technology for use in flow reactors
US-2021292474-A1 · Sep 23, 2021 · US
Ring-opening polymerizations using a flow reactor
US-11118008-B2 · Sep 14, 2021 · US
Process for separating gaseous constituents
US-2021277181-A1 · Sep 9, 2021 · US
Production plant for producing a chemical product by reacting h-functional reactants with phosgene, and method for operating same
US-2021147346-A1 · May 20, 2021 · US
Ring-opening polymerizations using a flow reactor
US-2020407496-A1 · Dec 31, 2020 · US
Bio-based polycarbonate ester and preparation method therefor
US-2020362105-A1 · Nov 19, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G64/205?
- CPC C08G64/205 is the Cooperative Patent Classification code for “characterised by the apparatus used.”
- How many patents are filed under CPC C08G64/205 (characterised by the apparatus used)?
- Our database includes 72 publications tagged with this CPC code.
- Is patent activity under CPC C08G64/205 growing?
- Publication counts under this code: 10 in 2024 vs 3 in 2025 (latest complete years).