Method of manufacturing touch electrode layer and touch electrode layer
US-2019391685-A1 · Dec 26, 2019 · US
Five-membered rings
Five-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 | C08K5/353 |
| Official title | Five-membered rings |
| Display label | Five-membered rings |
| Total patents | 173 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 15 |
| 2017 | 15 |
| 2018 | 10 |
| 2019 | 12 |
| 2020 | 23 |
| 2021 | 22 |
| 2022 | 22 |
| 2023 | 23 |
| 2024 | 9 |
| 2025 | 11 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Asymmetric membrane
US-2019381463-A1 · Dec 19, 2019 · US
Curable composition, film, optical filter, solid image pickup element, image display device, and infrared sensor
US-2019309106-A1 · Oct 10, 2019 · US
Process for preparing high-reactivity isobutene homo- or copolymers
US-2019284313-A1 · Sep 19, 2019 · US
Biocompatible polycarbonate and radiopaque polymer compositions and methods of manufacturing medical devices with same
US-10400101-B2 · Sep 3, 2019 · US
Polyolefin based stretched films incorporating mechanochromic dyes and method to use same
US-2019210342-A1 · Jul 11, 2019 · US
Polyoxazoline-Containing Compositions Catalyzed with Onium Salt
US-2019185700-A1 · Jun 20, 2019 · US
Perfluoroelastomeric compositions comprising oxazoles
US-10323142-B2 · Jun 18, 2019 · US
Silsesquioxane Resin and Oxaamine Composition
US-2019171106-A1 · Jun 6, 2019 · US
Perfluoroelastomer composition and sealing material
US-2019161606-A1 · May 30, 2019 · US
Thermosetting resin composition, and prepreg and substrate using same
US-2019153151-A1 · May 23, 2019 · US
Method for a composite material impregnated with thermoplastic polymer, obtained from a prepolymer and a chain extender
US-10240016-B2 · Mar 26, 2019 · US
Protective sheet, image display device, spectacle lens, and spectacles
US-2018371255-A1 · Dec 27, 2018 · US
Curing agents for compounds
US-2018371227-A1 · Dec 27, 2018 · US
Resin composition and optical film using same
US-2018305537-A1 · Oct 25, 2018 · US
Perfluoroelastomeric Compositions Comprising Oxazoles
US-2018258271-A1 · Sep 13, 2018 · US
Coated film
US-10011734-B2 · Jul 3, 2018 · US
Novel Spiropyran Based Composition and Application Thereof as Security Tag
US-2018163053-A1 · Jun 14, 2018 · US
Antibacterial resin composition
US-2018132479-A1 · May 17, 2018 · US
Scintillant nanoparticles for detection of radioisotope activity
US-2018118916-A1 · May 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08K5/353?
- CPC C08K5/353 is the Cooperative Patent Classification code for “Five-membered rings.”
- How many patents are filed under CPC C08K5/353 (Five-membered rings)?
- Our database includes 173 publications tagged with this CPC code.
- Is patent activity under CPC C08K5/353 growing?
- Publication counts under this code: 9 in 2024 vs 11 in 2025 (latest complete years).