Starch-based carrier material with M cell targeting performance and pH responsiveness, and preparation method therefor and use thereof
US-12447212-B2 · Oct 21, 2025 · US
having a substituent containing at least one nitrogen atom, e.g. cationic starch · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08B31/125 |
| Official title | {having a substituent containing at least one nitrogen atom, e.g. cationic starch} |
| Display label | having a substituent containing at least one nitrogen atom, e.g. cationic starch |
| Total patents | 26 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12447212-B2 · Oct 21, 2025 · US
US-2025197544-A1 · Jun 19, 2025 · US
US-2024217848-A1 · Jul 4, 2024 · US
US-11958925-B2 · Apr 16, 2024 · US
US-2023220140-A1 · Jul 13, 2023 · US
US-2023074309-A1 · Mar 9, 2023 · US
US-2022249677-A1 · Aug 11, 2022 · US
US-10954399-B2 · Mar 23, 2021 · US
US-10954474-B2 · Mar 23, 2021 · US
US-2019382600-A1 · Dec 19, 2019 · US
US-10143643-B2 · Dec 4, 2018 · US
US-2018282663-A1 · Oct 4, 2018 · US
US-2018071195-A1 · Mar 15, 2018 · US
US-2018071196-A1 · Mar 15, 2018 · US
US-9820928-B1 · Nov 21, 2017 · US
US-9809930-B2 · Nov 7, 2017 · US
US-2017312213-A1 · Nov 2, 2017 · US
US-9580865-B2 · Feb 28, 2017 · US
US-2016311934-A1 · Oct 27, 2016 · US
US-2016273166-A1 · Sep 22, 2016 · US
Answers are generated from the same data shown on this page.