Polymer glass transition temperature manipulation via z/e hydrazone photoswitching
US-12435166-B2 · Oct 7, 2025 · US
Esters containing nitrogen · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08F218/22 |
| Official title | {Esters containing nitrogen} |
| Display label | Esters containing nitrogen |
| Total patents | 15 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 2 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12435166-B2 · Oct 7, 2025 · US
US-12435165-B2 · Oct 7, 2025 · US
US-2024287218-A1 · Aug 29, 2024 · US
US-11987654-B2 · May 21, 2024 · US
US-2024059832-A1 · Feb 22, 2024 · US
US-2023125498-A1 · Apr 27, 2023 · US
US-11566089-B2 · Jan 31, 2023 · US
US-2022220234-A1 · Jul 14, 2022 · US
US-11316206-B2 · Apr 26, 2022 · US
US-11271254-B2 · Mar 8, 2022 · US
US-2021079134-A1 · Mar 18, 2021 · US
US-2020343594-A1 · Oct 29, 2020 · US
US-2020343555-A1 · Oct 29, 2020 · US
US-9474804-B2 · Oct 25, 2016 · US
US-9080096-B2 · Jul 14, 2015 · US