Photoacid generator for chemically amplified photoresists
US-12242190-B2 · Mar 4, 2025 · US
containing three- or four-membered rings
containing three- or four-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 | C07C2603/08 |
| Official title | containing three- or four-membered rings |
| Display label | containing three- or four-membered rings |
| Total patents | 28 |
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 | 1 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 8 |
| 2020 | 2 |
| 2022 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Allosteric modulators of nicotinic acetylcholine receptors
US-2024368109-A1 · Nov 7, 2024 · US
Photoacid generator for chemically amplified photoresists
US-2022308448-A1 · Sep 29, 2022 · US
Condensed cyclic compound, composition including the same, and organic light-emitting device including thin film formed from the composition
US-11453628-B2 · Sep 27, 2022 · US
Condensed cyclic compound, composition including the same, and organic light-emitting device including thin film formed from the composition
US-2020181045-A1 · Jun 11, 2020 · US
Cyclopropanation of substituted alkenes
US-10584080-B2 · Mar 10, 2020 · US
Novel initiators for living carbocationic polymerization
US-2019367664-A1 · Dec 5, 2019 · US
Initiators for living carbocationic polymerization
US-10472457-B2 · Nov 12, 2019 · US
Tricyclic sulfones as ROR gamma modulators
US-10435369-B2 · Oct 8, 2019 · US
Cyclopropanation of substituted alkenes
US-2019177247-A1 · Jun 13, 2019 · US
Novel initiators for living carbocationic polymerization
US-2019127510-A1 · May 2, 2019 · US
Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, and organic EL lighting device
US-10270035-B2 · Apr 23, 2019 · US
Polymers, monomers and methods of forming polymers
US-10270037-B2 · Apr 23, 2019 · US
Cyclopropanation of substituted alkenes
US-10227269-B2 · Mar 12, 2019 · US
High density/high cetane renewable fuel blends
US-10113130-B1 · Oct 30, 2018 · US
Cyclopropanation of substituted alkenes
US-2018170830-A1 · Jun 21, 2018 · US
Tricyclic sulfones as ror gamma modulators
US-2018127368-A1 · May 10, 2018 · US
Process for the Preparation of Fluorinated Diazoalkanes
US-2018118664-A1 · May 3, 2018 · US
Tricyclic compounds and process for preparation thereof
US-9950983-B2 · Apr 24, 2018 · US
Electronic device
US-9831441-B2 · Nov 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C2603/08?
- CPC C07C2603/08 is the Cooperative Patent Classification code for “containing three- or four-membered rings.”
- How many patents are filed under CPC C07C2603/08 (containing three- or four-membered rings)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC C07C2603/08 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).