Method for producing maleimide polyethylene glycol derivative
US-12595336-B2 · Apr 7, 2026 · US
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containing imide group
containing imide group · 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 | C08G65/33331 |
| Official title | {containing imide group} |
| Display label | containing imide group |
| Total patents | 16 |
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 | 2 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 3 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Carbon dioxide absorber
US-2025065258-A1 · Feb 27, 2025 · US
Method for producing maleimide polyethylene glycol derivative
US-2024043613-A1 · Feb 8, 2024 · US
Thermoplastic Composition
US-2023075938-A1 · Mar 9, 2023 · US
Epimorphic regeneration and related hydrogel delivery systems
US-11033541-B2 · Jun 15, 2021 · US
Epimorphic Regeneration and Related Hydrogel Delivery Systems
US-2019381031-A1 · Dec 19, 2019 · US
Synthesis of cyclic imide containing peptide products
US-10450343-B2 · Oct 22, 2019 · US
Epimorphic regeneration and related hydrogel delivery systems
US-10307415-B2 · Jun 4, 2019 · US
Non-fused aromatic dispersant composition
US-10150838-B2 · Dec 11, 2018 · US
Aromatic dispersant composition
US-10113031-B2 · Oct 30, 2018 · US
Epimorphic regeneration and related hydrogel delivery systems
US-9675607-B2 · Jun 13, 2017 · US
Synthesis of Cyclic Imide Containing Peptide Products
US-2016289263-A1 · Oct 6, 2016 · US
Aromatic dispersant composition
US-2016264731-A1 · Sep 15, 2016 · US
Non-fused aromatic dispersant composition
US-2016200868-A1 · Jul 14, 2016 · US
Polymer derivatives comprising an imide branching point
US-9085659-B2 · Jul 21, 2015 · US
Novel immunostimulants and synthesis thereof
US-2015050313-A1 · Feb 19, 2015 · US