Substituted 4-methylene-tetrahydropyrans, 4-methyl-dihydropyrans and 4-methyl-tetrahydropyrans and use thereof as aroma chemicals
US-12421203-B2 · Sep 23, 2025 · US
containing only hydrogen and carbon atoms in addition to the ring hetero atom
containing only hydrogen and carbon atoms in addition to the ring hetero atom · 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 | C07D309/18 |
| Official title | containing only hydrogen and carbon atoms in addition to the ring hetero atom |
| Display label | containing only hydrogen and carbon atoms in addition to the ring hetero atom |
| Total patents | 39 |
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 | 3 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Biaryl kinase inhibitors
US-2024360131-A1 · Oct 31, 2024 · US
Biaryl kinase inhibitors
US-12065437-B2 · Aug 20, 2024 · US
Organic compounds
US-12018229-B2 · Jun 25, 2024 · US
Substituted 4-methylene-tetrahydropyrans, 4-methyl-dihydropyrans and 4-methyl-tetrahydropyrans and use thereof as aroma chemicals
US-2023074079-A1 · Mar 9, 2023 · US
Compositions And Methods For Infrared-Light-Controlled Ruthenium-Catalyzed Olefin Metathesis
US-2022161245-A1 · May 26, 2022 · US
Organic compounds
US-2021355411-A1 · Nov 18, 2021 · US
Biaryl kinase inhibitors
US-2021277001-A1 · Sep 9, 2021 · US
Biaryl kinase inhibitors
US-10981910-B2 · Apr 20, 2021 · US
Extraction systems and methods
US-2021040414-A1 · Feb 11, 2021 · US
Biaryl kinase inhibitors
US-2020317671-A1 · Oct 8, 2020 · US
Biaryl kinase inhibitors
US-10723734-B2 · Jul 28, 2020 · US
Extraction systems and methods
US-10557105-B1 · Feb 11, 2020 · US
Biaryl kinase inhibitors
US-2019367508-A1 · Dec 5, 2019 · US
Asymmetric addition reactions
US-10464861-B2 · Nov 5, 2019 · US
Biaryl kinase inhibitors
US-10351563-B2 · Jul 16, 2019 · US
Biaryl kinase inhibitors
US-2019048006-A1 · Feb 14, 2019 · US
Biaryl kinase inhibitors
US-10155760-B2 · Dec 18, 2018 · US
Aldehyde compounds and their use in perfume compositions
US-10150722-B2 · Dec 11, 2018 · US
Production of 2-substituted 4-hydroxy-4-methyltetrahydropyrans having stable odoriferous quality
US-10023550-B2 · Jul 17, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D309/18?
- CPC C07D309/18 is the Cooperative Patent Classification code for “containing only hydrogen and carbon atoms in addition to the ring hetero atom.”
- How many patents are filed under CPC C07D309/18 (containing only hydrogen and carbon atoms in addition to the ring hetero atom)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC C07D309/18 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).