Opioid haptens, conjugates, vaccines, and methods of generating antibodies
US-2026049057-A1 · Feb 19, 2026 · US
having a hetero atom as the second substituent in position 4
having a hetero atom as the second substituent in position 4 · 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 | C07D211/66 |
| Official title | having a hetero atom as the second substituent in position 4 |
| Display label | having a hetero atom as the second substituent in position 4 |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compounds and methods for treating cancer
US-2025289794-A1 · Sep 18, 2025 · US
Processes and compounds for preparing spiroligomers
US-2025145644-A1 · May 8, 2025 · US
Compounds and methods for treating cancer
US-12286413-B2 · Apr 29, 2025 · US
Method for removing tert-butoxycarbonyl group
US-2025084012-A1 · Mar 13, 2025 · US
Synthesis of ras inhibitors
US-2024383920-A1 · Nov 21, 2024 · US
Carboxylic Acid Containing Indanyl Compounds for the Treatment of Neurodegenerative Diseases
US-2024124394-A1 · Apr 18, 2024 · US
Modulators of programmed death-ligand-1
US-2024010642-A1 · Jan 11, 2024 · US
Process for preparing remifentanil hydrochloride
US-2023312472-A1 · Oct 5, 2023 · US
Chemical compounds
US-2023165848-A1 · Jun 1, 2023 · US
Fentanyl haptens, fentanyl hapten conjugates, and methods for making and using
US-2023126276-A1 · Apr 27, 2023 · US
Chemical compounds
US-11547704-B2 · Jan 10, 2023 · US
Compounds and methods for treating cancer
US-2022411389-A1 · Dec 29, 2022 · US
Compounds and methods for treating cancer
US-11325892-B2 · May 10, 2022 · US
Opioid haptens, conjugates, vaccines, and methods of generating antibodies
US-2022081400-A1 · Mar 17, 2022 · US
Albicidin derivatives, their use and synthesis
US-11225465-B2 · Jan 18, 2022 · US
Salt of phenylpropionamide derivative and preparation method therefor
US-11180530-B2 · Nov 23, 2021 · US
Salt of phenylpropionamide derivative and preparation method therefor
US-2020331963-A1 · Oct 22, 2020 · US
Chemical Compounds
US-2020297710-A1 · Sep 24, 2020 · US
Albicidin derivatives, their use and synthesis
US-2020165214-A1 · May 28, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D211/66?
- CPC C07D211/66 is the Cooperative Patent Classification code for “having a hetero atom as the second substituent in position 4.”
- How many patents are filed under CPC C07D211/66 (having a hetero atom as the second substituent in position 4)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC C07D211/66 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).