Liquid-crystal medium comprising poylmerizable compounds
US-12404452-B2 · Sep 2, 2025 · US
Dopants or charge transfer agents
Dopants or charge transfer agents · 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 | C09K19/58 |
| Official title | Dopants or charge transfer agents |
| Display label | Dopants or charge transfer agents |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 9 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid crystal material applied to multi-response-mode smart window and application thereof
US-12359129-B2 · Jul 15, 2025 · US
Atropisomer of 1,1'-binaphthyl derivative, polymerizable liquid crystal composition, optical film, image display device, and eyewear
US-2025101307-A1 · Mar 27, 2025 · US
Dye compound-containing liquid crystal composition and device including the same
US-12215268-B2 · Feb 4, 2025 · US
Liquid-crystalline media
US-2025026983-A1 · Jan 23, 2025 · US
Liquid-crystal medium
US-12163081-B2 · Dec 10, 2024 · US
Flexoelectric Liquid Crystal Composition, Liquid Crystal Element, Laser Inspection System, and Method for Analyzing Test Subject
US-2024345033-A1 · Oct 17, 2024 · US
Liquid crystal material applied to multi-response-mode smart window and appliation thereof
US-2024327710-A1 · Oct 3, 2024 · US
Dye compound-containing liquid crystal composition and device including the same
US-2024174925-A1 · May 30, 2024 · US
Liquid-crystalline medium
US-11939509-B2 · Mar 26, 2024 · US
Liquid-crystalline medium
US-11932797-B2 · Mar 19, 2024 · US
Liquid-crystal medium
US-2023392077-A1 · Dec 7, 2023 · US
Liquid-crystalline medium for use in a switching element
US-11788009-B2 · Oct 17, 2023 · US
Liquid-crystalline medium for use in a switching element
US-11760931-B2 · Sep 19, 2023 · US
Liquid-crystal medium comprising poylmerizable compounds
US-2023242817-A1 · Aug 3, 2023 · US
Direct mapping of local director field of nematic liquid crystals at the nanoscale
US-11680207-B2 · Jun 20, 2023 · US
Liquid-crystalline medium
US-2022325180-A1 · Oct 13, 2022 · US
Liquid-crystalline medium
US-2022325181-A1 · Oct 13, 2022 · US
Liquid-crystalline media
US-2022315838-A1 · Oct 6, 2022 · US
Fast flexoelectro-optic switching based on bimesogen-doped and polymer-stabilized vertical standing helix mode
US-11434426-B2 · Sep 6, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K19/58?
- CPC C09K19/58 is the Cooperative Patent Classification code for “Dopants or charge transfer agents.”
- How many patents are filed under CPC C09K19/58 (Dopants or charge transfer agents)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC C09K19/58 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).