Polymerisable LC medium and polymer film with flat optical dispersion
US-12031079-B2 · Jul 9, 2024 · US
characterised by the chemical structure of the liquid crystal components {, e.g. by a specific unit}
characterised by the chemical structure of the liquid crystal components {, e.g. by a specific unit} · 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 | C09K19/04 |
| Official title | characterised by the chemical structure of the liquid crystal components {, e.g. by a specific unit} |
| Display label | characterised by the chemical structure of the liquid crystal components {, e.g. by a specific unit} |
| Total patents | 341 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 13 |
| 2017 | 19 |
| 2018 | 28 |
| 2019 | 35 |
| 2020 | 35 |
| 2021 | 51 |
| 2022 | 46 |
| 2023 | 34 |
| 2024 | 28 |
| 2025 | 26 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polymerisable compounds and the use thereof in liquid-crystal displays
US-2018371321-A1 · Dec 27, 2018 · US
Liquid crystal composition and liquid crystal display device
US-2018327666-A1 · Nov 15, 2018 · US
Liquid-crystalline medium and electro-optical liquid-crystal display
US-10106741-B2 · Oct 23, 2018 · US
Reactive mesogens
US-10048420-B2 · Aug 14, 2018 · US
Process for the stabilisation of liquid crystal media
US-2018195003-A1 · Jul 12, 2018 · US
Bimesogenic compounds and mesogenic media
US-9914876-B2 · Mar 13, 2018 · US
Liquid-crystalline media having homeotropic alignment
US-2018057743-A1 · Mar 1, 2018 · US
Liquid crystal compound having difluoromethyleneoxy group, liquid crystal composition, and liquid crystal display device
US-2018030347-A1 · Feb 1, 2018 · US
Compound, liquid crystal composition including the same, and liquid crystal display device including the same
US-9862886-B2 · Jan 9, 2018 · US
Polymerizable polar compound, liquid crystal composition, and liquid crystal display element
US-2017369418-A1 · Dec 28, 2017 · US
Electrically controlled interference color filter and the use thereof
US-2017371224-A1 · Dec 28, 2017 · US
Liquid-crystalline medium and high-frequency components comprising same
US-2017349827-A1 · Dec 7, 2017 · US
Liquid-crystalline media having homeotropic alignment
US-9809748-B2 · Nov 7, 2017 · US
Composition and liquid crystal display device using the same
US-2017306231-A1 · Oct 26, 2017 · US
Liquid crystal composition and liquid crystal display device
US-2017298277-A1 · Oct 19, 2017 · US
Reactive mesogen formulation with conductive additive
US-2017283699-A1 · Oct 5, 2017 · US
Ultraviolet light absorbers
US-2017275534-A1 · Sep 28, 2017 · US
Liquid-crystal media and light modulation element
US-2017253801-A1 · Sep 7, 2017 · US
Surface-modified metal oxide particle dispersion liquid, method for producing same, surface-modified metal oxide particle-silicone resin composite composition, surface-modified metal oxide particle-silicone resin composite body, optical member and light emitting device
US-2017226418-A1 · Aug 10, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K19/04?
- CPC C09K19/04 is the Cooperative Patent Classification code for “characterised by the chemical structure of the liquid crystal components {, e.g. by a specific unit}.”
- How many patents are filed under CPC C09K19/04 (characterised by the chemical structure of the liquid crystal components {, e.g. by a specific unit})?
- Our database includes 341 publications tagged with this CPC code.
- Is patent activity under CPC C09K19/04 growing?
- Publication counts under this code: 28 in 2024 vs 26 in 2025 (latest complete years).