Polycarbonate Resin, Polycarbonate Resin Composition, Optical Component, and Producing Method for Polycarbonate Resin
US-2026022205-A1 · Jan 22, 2026 · US
ortho- or peri-condensed with carbocyclic rings or ring systems
ortho- or peri-condensed with carbocyclic rings or ring systems · 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 | C07D317/44 |
| Official title | ortho- or peri-condensed with carbocyclic rings or ring systems |
| Display label | ortho- or peri-condensed with carbocyclic rings or ring systems |
| Total patents | 50 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 8 |
| 2018 | 6 |
| 2019 | 1 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 3 |
| 2023 | 8 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Catalyst composition for cyclic carbonate production from CO2 and epoxides
US-12496575-B2 · Dec 16, 2025 · US
Lipids and compositions for the delivery of therapeutics
US-12453776-B2 · Oct 28, 2025 · US
Carbonate (meth)acrylate composition
US-2025066518-A1 · Feb 27, 2025 · US
Novel lipids and compositions for the delivery of therapeutics
US-2024424105-A1 · Dec 26, 2024 · US
Spirobicyclic analogues
US-12145961-B2 · Nov 19, 2024 · US
Lipids and compositions for the delivery of therapeutics
US-12042541-B2 · Jul 23, 2024 · US
Bioorthogonal linkers and reactions
US-2024058455-A1 · Feb 22, 2024 · US
Lipids and compositions for the delivery of therapeutics
US-2024042039-A1 · Feb 8, 2024 · US
Novel lipids and compositions for the delivery of therapeutics
US-2023381319-A1 · Nov 30, 2023 · US
Novel Spirobicyclic Analogues
US-2023303612-A1 · Sep 28, 2023 · US
Method of stabilizing perfluorodioxolane compound, perfluorodioxolane compound-containing composition and method of producing perfluorodioxolane compound polymer
US-11767308-B2 · Sep 26, 2023 · US
Lipids and compositions for the delivery of therapeutics
US-11712476-B2 · Aug 1, 2023 · US
Spirobicyclic analogues
US-11702441-B2 · Jul 18, 2023 · US
Actinic ray-sensitive or radiation-sensitive resin composition, resist film, pattern forming method, and method for manufacturing electronic device
US-2023168581-A1 · Jun 1, 2023 · US
Compounds for fast and efficient click release
US-2023121556-A1 · Apr 20, 2023 · US
Method of stabilizing perfluorodioxolane compound, perfluorodioxolane compound-containing composition and method of producing perfluorodioxolane compound polymer
US-2023068345-A1 · Mar 2, 2023 · US
Catalyst composition for cyclic carbonate production from co2 and epoxides
US-2022379290-A1 · Dec 1, 2022 · US
Method for preparing cyclic carbonate
US-11292777-B2 · Apr 5, 2022 · US
Lipids and compositions for the delivery of therapeutics
US-2022023427-A1 · Jan 27, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D317/44?
- CPC C07D317/44 is the Cooperative Patent Classification code for “ortho- or peri-condensed with carbocyclic rings or ring systems.”
- How many patents are filed under CPC C07D317/44 (ortho- or peri-condensed with carbocyclic rings or ring systems)?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC C07D317/44 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).