Air hose for automobile
US-9809700-B2 · Nov 7, 2017 · US
Six-membered rings
Six-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 | C08K5/357 |
| Official title | Six-membered rings |
| Display label | Six-membered rings |
| Total patents | 324 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 25 |
| 2017 | 27 |
| 2018 | 21 |
| 2019 | 35 |
| 2020 | 33 |
| 2021 | 42 |
| 2022 | 35 |
| 2023 | 27 |
| 2024 | 18 |
| 2025 | 20 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sulfone polymer composition
US-2017292022-A1 · Oct 12, 2017 · US
Curable composition and photochromic composition
US-2017210943-A1 · Jul 27, 2017 · US
Retardation film, polarizing plate and liquid crystal display
US-9581728-B2 · Feb 28, 2017 · US
Resin composition for sealing semiconductor and semiconductor device
US-2016372394-A1 · Dec 22, 2016 · US
5h-furan-2-one derivatives stabilization of organic material
US-2016362535-A1 · Dec 15, 2016 · US
Curable compositions containing benzoxazine epoxy blend and use thereof
US-2016362554-A1 · Dec 15, 2016 · US
Pigmented polyimide films and methods thereto
US-2016347933-A9 · Dec 1, 2016 · US
Benzoxazines and compositions containing the same
US-9499666-B2 · Nov 22, 2016 · US
Adhesive useful for installing vehicle windows
US-9475972-B2 · Oct 25, 2016 · US
5H-furan-2-one derivatives for stabilization of organic material
US-9458380-B2 · Oct 4, 2016 · US
Positive-type photosensitive resin composition, method for producing semiconductor device including cured film using the same
US-9454078-B2 · Sep 27, 2016 · US
Polybenzoxazine composition
US-9416302-B2 · Aug 16, 2016 · US
Color conversion film and back light unit and display apparatus comprising the same
US-2016223728-A1 · Aug 4, 2016 · US
Process for the preparation of polyether carbonate polyols
US-9382417-B2 · Jul 5, 2016 · US
Halogen-free thermosetting resin composition, and prepreg and laminate for printed circuits using the same
US-2016185939-A1 · Jun 30, 2016 · US
Benzoxazines and compositions containing the same
US-2016185908-A1 · Jun 30, 2016 · US
Polyimide precursor composition, polyimide molded article, and method for preparing polyimide molded article
US-2016185964-A1 · Jun 30, 2016 · US
Stabilizer compositions and methods for using same for protecting organic materials from uv light and thermal degradation
US-2016145427-A1 · May 26, 2016 · US
Humic acid derivatives and methods of preparation and use
US-2016108010-A1 · Apr 21, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08K5/357?
- CPC C08K5/357 is the Cooperative Patent Classification code for “Six-membered rings.”
- How many patents are filed under CPC C08K5/357 (Six-membered rings)?
- Our database includes 324 publications tagged with this CPC code.
- Is patent activity under CPC C08K5/357 growing?
- Publication counts under this code: 18 in 2024 vs 20 in 2025 (latest complete years).