Cyclopropenimines for activation of carbon dioxide
US-12415889-B2 · Sep 16, 2025 · US
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and alcohols
and alcohols · 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 | C08G64/323 |
| Official title | {and alcohols} |
| Display label | and alcohols |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Novel nonionic surfactants and processes to make them
US-2025109246-A1 · Apr 3, 2025 · US
Method for preparing polyalkylene carbonate resin
US-2024141103-A1 · May 2, 2024 · US
Cyclopropenimines for activation of carbon dioxide
US-2024076448-A1 · Mar 7, 2024 · US
Polycarbonate polyol nanocomposites
US-11919998-B2 · Mar 5, 2024 · US
Organic metal-free catalysts with electrophilic and nucleophilic dual-functions, preparation methods of making the same, and uses thereof
US-11780961-B2 · Oct 10, 2023 · US
Polycarbonate polyol nanocomposites
US-2022227924-A1 · Jul 21, 2022 · US
Organic metal-free catalysts with electrophilic and nucleophilic dual-functions, preparation methods of making the same, and uses thereof
US-2021363297-A1 · Nov 25, 2021 · US
Use of CO2 for the synthesis of cyclic glycocarbonates and linear polyglycocarbonates by polycondensation from glycans
US-10501576-B2 · Dec 10, 2019 · US
Use of co2 for the synthesis of cyclic glycocarbonates and linear polyglycocarbonates by polycondensation from glycans
US-2018118884-A1 · May 3, 2018 · US
Method for activating double metal cyanide catalysts for the production of polyether carbonate polyols
US-9309356-B2 · Apr 12, 2016 · US
Method for activating double metal cyanide catalysts for producing polyether polyols
US-9249259-B2 · Feb 2, 2016 · US
Process for the production of polyether carbonate polyols
US-9062156-B2 · Jun 23, 2015 · US
Polycarbonate resin compositions, and molded articles, films, plates, and injection-molded articles obtained therefrom
US-9006351-B2 · Apr 14, 2015 · US