Amphoteric compounds
US-12516019-B2 · Jan 6, 2026 · US
containing amino groups bound to the same carbon skeleton
containing amino groups bound to the same carbon skeleton · 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 | C07C309/18 |
| Official title | containing amino groups bound to the same carbon skeleton |
| Display label | containing amino groups bound to the same carbon skeleton |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 8 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Prodrugs of Fumarates and Their Use in Treating Various Diseases
US-2025127747-A1 · Apr 24, 2025 · US
Amino acid-based polymerizable compounds and ophthalmic devices prepared therefrom
US-2025002629-A1 · Jan 2, 2025 · US
Amino acid-based polymerizable compounds and ophthalmic devices prepared therefrom
US-12116443-B2 · Oct 15, 2024 · US
Prodrugs of fumarates and their use in treating various diseases
US-12076306-B2 · Sep 3, 2024 · US
Prodrugs of Fumarates and Their Use in Treating Various Diseases
US-2024024275-A1 · Jan 25, 2024 · US
Polyfunctional quaternary ammonium salt of sulfonic acid having active-hydrogen groups
US-2023265053-A1 · Aug 24, 2023 · US
Prodrugs of fumarates and their use in treating various diseases
US-11679092-B2 · Jun 20, 2023 · US
Amphoteric compounds
US-2022356151-A1 · Nov 10, 2022 · US
Amphoteric compounds
US-11414380-B2 · Aug 16, 2022 · US
Prodrugs of fumarates and their use in treating various diseases
US-2022096419-A1 · Mar 31, 2022 · US
Amino acid-based polymerizable compounds and ophthalmic devices prepared therefrom
US-2021388142-A1 · Dec 16, 2021 · US
Damping-imparting agent and resin composition for damping material
US-11118074-B2 · Sep 14, 2021 · US
Prodrugs of fumarates and their use in treating various diseases
US-11083703-B2 · Aug 10, 2021 · US
Hydroxysultaine- and sulfobetaine-based geminal zwitterionic liquids, method for obtaining same, and use thereof as wettability modifiers having corrosion inhibiting properties
US-11014875-B2 · May 25, 2021 · US
Prodrugs of Fumarates and Their Use in Treating Various Diseases
US-2020352893-A1 · Nov 12, 2020 · US
Prodrugs of fumarates and their use in treating various diseases
US-10596140-B2 · Mar 24, 2020 · US
Prodrugs of Fumarates and Their Use in Treating Various Diseases
US-2020016111-A1 · Jan 16, 2020 · US
Small molecule inhibitors of protein tyrosine phosphatases and uses thereof
US-10532977-B2 · Jan 14, 2020 · US
Protein tyrosine phosphatases or SHP2 inhibitors and uses thereof
US-10494332-B2 · Dec 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C309/18?
- CPC C07C309/18 is the Cooperative Patent Classification code for “containing amino groups bound to the same carbon skeleton.”
- How many patents are filed under CPC C07C309/18 (containing amino groups bound to the same carbon skeleton)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC C07C309/18 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).