Polymerisable LC medium and polymer film with flat optical dispersion
US-12031079-B2 · Jul 9, 2024 · US
the chain containing carbon-to-carbon triple bonds, e.g. tolans
the chain containing carbon-to-carbon triple bonds, e.g. tolans · 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 | C09K19/18 |
| Official title | the chain containing carbon-to-carbon triple bonds, e.g. tolans |
| Display label | the chain containing carbon-to-carbon triple bonds, e.g. tolans |
| Total patents | 264 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 14 |
| 2017 | 31 |
| 2018 | 30 |
| 2019 | 35 |
| 2020 | 25 |
| 2021 | 21 |
| 2022 | 22 |
| 2023 | 20 |
| 2024 | 19 |
| 2025 | 22 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heteroaromatic isothiocyanates
US-2024124779-A1 · Apr 18, 2024 · US
Polymerizable polar compound, liquid crystal composition, and liquid crystal display element
US-2017369418-A1 · Dec 28, 2017 · US
Compounds having a c-c triple bond
US-2017362505-A1 · Dec 21, 2017 · US
Liquid-crystalline medium and high-frequency components comprising same
US-2017349832-A1 · Dec 7, 2017 · US
Liquid crystal display device and method for manufacturing the same
US-2017321122-A1 · Nov 9, 2017 · US
Liquid-crystalline medium and high-frequency components comprising same
US-2017306230-A1 · Oct 26, 2017 · US
Compounds having a C—C triple bond
US-9777217-B2 · Oct 3, 2017 · US
Mesogenic compounds, liquid-crystalline media and components for high-frequency technology
US-9765259-B2 · Sep 19, 2017 · US
Nematic liquid crystal composition and liquid crystal display device using the same
US-2017253800-A1 · Sep 7, 2017 · US
Liquid-crystalline media, components for high-frequency technology, and mesogenic compounds
US-9752077-B2 · Sep 5, 2017 · US
Zoom lens and method for manufacturing the same
US-9746745-B1 · Aug 29, 2017 · US
Liquid crystal composition and liquid crystal display device using the same
US-2017218271-A1 · Aug 3, 2017 · US
Liquid crystal display device and method for manufacturing the same
US-9719017-B2 · Aug 1, 2017 · US
Liquid-crystal display element
US-2017210988-A1 · Jul 27, 2017 · US
Compound having a difluorocyclohexane ring, liquid crystal composition and liquid crystal display device
US-2017210991-A1 · Jul 27, 2017 · US
Liquid-crystalline medium and high-frequency components comprising same
US-2017204332-A1 · Jul 20, 2017 · US
Polymerizable compound having triple bond, liquid crystal composition and liquid crystal display device
US-9708534-B2 · Jul 18, 2017 · US
Polymerizable liquid crystal compound, composition for optical film, and optical film, compensation film, antireflective film, and display device including the same
US-2017183286-A1 · Jun 29, 2017 · US
Mixed left/right chiral liquid crystal for improved switching speed and tunability for rf devices
US-2017170557-A1 · Jun 15, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K19/18?
- CPC C09K19/18 is the Cooperative Patent Classification code for “the chain containing carbon-to-carbon triple bonds, e.g. tolans.”
- How many patents are filed under CPC C09K19/18 (the chain containing carbon-to-carbon triple bonds, e.g. tolans)?
- Our database includes 264 publications tagged with this CPC code.
- Is patent activity under CPC C09K19/18 growing?
- Publication counts under this code: 19 in 2024 vs 22 in 2025 (latest complete years).