Liquid-crystal medium
US-2017335195-A1 · Nov 23, 2017 · US
containing esters
containing esters · 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 | C09K19/46 |
| Official title | containing esters |
| Display label | containing esters |
| Total patents | 254 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 26 |
| 2017 | 29 |
| 2018 | 36 |
| 2019 | 33 |
| 2020 | 20 |
| 2021 | 24 |
| 2022 | 24 |
| 2023 | 16 |
| 2024 | 12 |
| 2025 | 14 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid crystal composition
US-2017335191-A1 · Nov 23, 2017 · US
Liquid-crystal medium
US-2017335194-A1 · Nov 23, 2017 · US
Liquid crystalline medium and liquid crystal display
US-9822307-B2 · Nov 21, 2017 · US
Bimesogenic compounds and mesogenic media
US-2017327741-A1 · Nov 16, 2017 · US
Mesogenic compound, liquid-crystal medium and liquid crystal display
US-9809749-B2 · Nov 7, 2017 · US
Liquid-crystalline medium
US-2017306232-A1 · Oct 26, 2017 · US
Liquid crystal composition, method of producing the same, and retardation film constituted from the same
US-2017306234-A1 · Oct 26, 2017 · US
Polymerizable composition and film using same
US-2017292075-A1 · Oct 12, 2017 · US
Polymerisable mesogenic compound, liquid crystal medium and liquid crystal display
US-2017226422-A1 · Aug 10, 2017 · US
Polymerizable liquid crystal compound, composition, liquid crystal polymerization film-kind thereof and use thereof
US-2017174992-A1 · Jun 22, 2017 · US
Liquid crystal composition and liquid crystal display including the same
US-9683172-B2 · Jun 20, 2017 · US
Switch element comprising a liquid-crystalline medium
US-9617473-B2 · Apr 11, 2017 · US
Composition for optical film, and films and display device
US-9599760-B2 · Mar 21, 2017 · US
Liquid-crystalline medium
US-2017037316-A1 · Feb 9, 2017 · US
Liquid crystal composition and liquid crystal optical device
US-2017037317-A1 · Feb 9, 2017 · US
Polymerisable mixtures and the use thereof in liquid crystal displays
US-9556382-B2 · Jan 31, 2017 · US
Polymerizable compound, polymer, polymerizable composition, film, and half mirror for displaying projection image
US-2017009138-A1 · Jan 12, 2017 · US
Liquid-crystalline medium and liquid-crystal display
US-2017002269-A1 · Jan 5, 2017 · US
Polymerizable liquid crystal composition and optical anisotropical body thereof
US-2016369166-A1 · Dec 22, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K19/46?
- CPC C09K19/46 is the Cooperative Patent Classification code for “containing esters.”
- How many patents are filed under CPC C09K19/46 (containing esters)?
- Our database includes 254 publications tagged with this CPC code.
- Is patent activity under CPC C09K19/46 growing?
- Publication counts under this code: 12 in 2024 vs 14 in 2025 (latest complete years).