Functional oligomers and functional polymers including hydroxylated polymers and conjugates thereof and uses thereof
US-12365752-B2 · Jul 22, 2025 · US
Eight-membered rings
Eight-membered rings · 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 | C07D321/12 |
| Official title | Eight-membered rings |
| Display label | Eight-membered rings |
| Total patents | 49 |
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 | 5 |
| 2016 | 8 |
| 2017 | 6 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 7 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 8 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Treprostinil prodrugs
US-2025154181-A1 · May 15, 2025 · US
Functional oligomers and functional polymers including hydroxylated polymers and conjugates thereof and uses thereof
US-2024425633-A1 · Dec 26, 2024 · US
Treprostinil prodrugs
US-12173021-B2 · Dec 24, 2024 · US
Onium salt, chemically amplified resist composition, and patterning process
US-2024377733-A1 · Nov 14, 2024 · US
Electrolytic solution for lithium-ion secondary battery, and lithium-ion secondary battery
US-12095036-B2 · Sep 17, 2024 · US
Functional oligomers and functional polymers including hydroxylated polymers and conjugates thereof and uses thereof
US-12054570-B2 · Aug 6, 2024 · US
Treprostinil prodrugs
US-2024051979-A1 · Feb 15, 2024 · US
Crosslinked polymers with tunable coefficients of thermal expansion
US-11873301-B2 · Jan 16, 2024 · US
Diarylalkanes as potent inhibitors of binuclear enzymes
US-11857657-B2 · Jan 2, 2024 · US
Crosslinked polymers with tunable coefficients of thermal expansion
US-11739092-B2 · Aug 29, 2023 · US
Crosslinked Polymers with Tunable Coefficients of Thermal Expansion
US-2023250099-A1 · Aug 10, 2023 · US
Treprostinil prodrugs
US-11634443-B2 · Apr 25, 2023 · US
Organic electroluminescent materials and devices
US-11322691-B2 · May 3, 2022 · US
Crosslinked Polymers with Tunable Coefficients of Thermal Expansion
US-2021387987-A1 · Dec 16, 2021 · US
Chemical tools for imaging phospholipase D activity
US-11198898-B2 · Dec 14, 2021 · US
Electrolytic solution for lithium-ion secondary battery, and lithium-ion secondary battery
US-2021226253-A1 · Jul 22, 2021 · US
Organic electroluminescent materials and devices
US-11038137-B2 · Jun 15, 2021 · US
Functional oligomers and functional polymers including hydroxylated polymers and conjugates thereof and uses thereof
US-2021147598-A1 · May 20, 2021 · US
Diarylalkanes as potent inhibitors of binuclear enzymes
US-2021085580-A1 · Mar 25, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D321/12?
- CPC C07D321/12 is the Cooperative Patent Classification code for “Eight-membered rings.”
- How many patents are filed under CPC C07D321/12 (Eight-membered rings)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC C07D321/12 growing?
- Publication counts under this code: 8 in 2024 vs 2 in 2025 (latest complete years).