Articles of manufacture with polyurea capsules cross-linked with chitosan
US-12582956-B2 · Mar 24, 2026 · US
containing heterocyclic groups
containing heterocyclic groups · 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 | C08G18/3293 |
| Official title | {containing heterocyclic groups} |
| Display label | containing heterocyclic groups |
| Total patents | 36 |
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 | 4 |
| 2017 | 6 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Modification method of polyurethane, polyurethane, polishing pad, and modification method of polishing pad
US-12576474-B2 · Mar 17, 2026 · US
Articles of Manufacture with Polyurea Capsules Cross-linked with Chitosan
US-2025205668-A1 · Jun 26, 2025 · US
Electrophotographic member, process cartridge, and electrophotographic image forming apparatus
US-12158724-B2 · Dec 3, 2024 · US
Modification method of polyurethane, polyurethane, polishing pad, and modification method of polishing pad
US-2024342858-A1 · Oct 17, 2024 · US
Modification method of polyurethane, polyurethane, polishing pad, and modification method of polishing pad
US-12109665-B2 · Oct 8, 2024 · US
Polyurethanes, Polishing Articles and Polishing Systems Therefrom and Method of Use Thereof
US-2023383048-A1 · Nov 30, 2023 · US
Electrophotographic member, process cartridge, and electrophotographic image forming apparatus
US-2022276579-A1 · Sep 1, 2022 · US
Functionalized accelerating resins derived from renewable materials
US-11401367-B2 · Aug 2, 2022 · US
Articles of Manufacture with Polyurea Capsules Cross-linked with Chitosan
US-2021339217-A1 · Nov 4, 2021 · US
Modification method of polyurethane, polyurethane, polishing pad, and modification method of polishing pad
US-2021276143-A1 · Sep 9, 2021 · US
Additives for lignocellulosic composites
US-10960570-B2 · Mar 30, 2021 · US
Vegetable oil based viscoelastic polymers that display photoresponsive rheological and adhesive properties
US-10899885-B2 · Jan 26, 2021 · US
Amine-functionalized polymeric compositions for medical devices
US-10688217-B2 · Jun 23, 2020 · US
Method for treatment of carbon dioxide absorbing agent
US-10544252-B2 · Jan 28, 2020 · US
Composition to reduce the amount of aldehydes emitted from polyurethane foams
US-10472456-B2 · Nov 12, 2019 · US
Electrochromic compounds with improved color stability in their radical states
US-10464900-B2 · Nov 5, 2019 · US
Additives for lignocellulosic composites
US-2019270219-A1 · Sep 5, 2019 · US
Composition comprising dual ionic ph-sensitive copolymer for delivering sdf-1 topically to the brain and use thereof
US-2019038752-A1 · Feb 7, 2019 · US
Electrochromic compounds with improved color stability in their radical states
US-2018346421-A1 · Dec 6, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G18/3293?
- CPC C08G18/3293 is the Cooperative Patent Classification code for “containing heterocyclic groups.”
- How many patents are filed under CPC C08G18/3293 (containing heterocyclic groups)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC C08G18/3293 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).