Method of producing thiourethane resin raw material and application thereof, method of producing polythiol composition and application thereof, and polythiol composition
US-12534431-B2 · Jan 27, 2026 · US
the carbon skeleton containing rings
the carbon skeleton containing 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 | C07C265/08 |
| Official title | the carbon skeleton containing rings |
| Display label | the carbon skeleton containing rings |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 6 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 7 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing polyamine compound and application thereof
US-2026015320-A1 · Jan 15, 2026 · US
Method of producing polyamine compound and application thereof
US-12497357-B2 · Dec 16, 2025 · US
Diisocyanate composition, preparation method thereof and optical material using same
US-12049437-B2 · Jul 30, 2024 · US
Xylylene diisocynate composition, preparation method therefor and use thereof
US-2024166795-A1 · May 23, 2024 · US
Diamine composition, and method of preparing diisocyanate composition
US-11760719-B2 · Sep 19, 2023 · US
Method of producing polyamine compound and application thereof
US-2023286897-A1 · Sep 14, 2023 · US
Xylylene diisocyanate composition, polymerizable composition for optical material, resin, molded article, optical element, and lens
US-11753367-B2 · Sep 12, 2023 · US
Xylylene diisocyanate composition, polymerizable composition for optical material, resin, molded article, optical element, and lens
US-2023202971-A1 · Jun 29, 2023 · US
Isocyanate composition with improved stability and reactivity, and optical lens using same
US-11673992-B2 · Jun 13, 2023 · US
Method of producing thiourethane resin raw material and application thereof, method of producing polythiol composition and application thereof, and polythiol composition
US-2023088165-A1 · Mar 23, 2023 · US
Alkyldiphenylmethane protective agent
US-11542287-B2 · Jan 3, 2023 · US
Distillation of polyisocyanates
US-2022267500-A1 · Aug 25, 2022 · US
Multi-grafting site carbon nanomaterial and activated carbon nanomaterial and preparation method thereof and displacement system for ultra-low permeability oil reservoirs
US-11247909-B1 · Feb 15, 2022 · US
Diisocyanate composition, preparation method thereof and optical material using same
US-2021171451-A1 · Jun 10, 2021 · US
Isocyanate composition with improved stability and reactivity, and optical lens using same
US-2021163669-A1 · Jun 3, 2021 · US
Method for preparing aliphatic isocyanate
US-10975021-B2 · Apr 13, 2021 · US
Novel alkyldiphenylmethane protective agent
US-2021079028-A1 · Mar 18, 2021 · US
Alkyldiphenylmethane protective agent
US-10870667-B2 · Dec 22, 2020 · US
Novel alkyldiphenylmethane protective agent
US-2020325163-A1 · Oct 15, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C265/08?
- CPC C07C265/08 is the Cooperative Patent Classification code for “the carbon skeleton containing rings.”
- How many patents are filed under CPC C07C265/08 (the carbon skeleton containing rings)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC C07C265/08 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).