Methods for controlling the phase of self-assembled ionic liquid crystal (ilc) structures
US-2025368898-A1 · Dec 4, 2025 · US
containing boron or phosphorus
containing boron or phosphorus · 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 | C09K19/404 |
| Official title | {containing boron or phosphorus} |
| Display label | containing boron or phosphorus |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 4 |
| 2021 | 7 |
| 2022 | 1 |
| 2023 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for controlling the pitch of self-assembled ionic liquid crystal (ILC) structures
US-12398324-B1 · Aug 26, 2025 · US
Composition for color conversion film, color conversion film, method for manufacturing color conversion film, backlight unit, and liquid crystal display device
US-2023340330-A1 · Oct 26, 2023 · US
Boron atomic layer sheet and laminated sheet, method for manufacturing the same, and liquid crystals
US-11795059-B2 · Oct 24, 2023 · US
Phase difference film, method for manufacturing phase difference film, polarizing plate, and liquid crystal display device
US-11726367-B2 · Aug 15, 2023 · US
Fluoro-boron pyrrole liquid crystal compounds containing 8-(bisphenylethynyl)-ester group flexible multiple ring, preparation method and use thereof
US-11629157-B2 · Apr 18, 2023 · US
Electronic switching element
US-11522141-B2 · Dec 6, 2022 · US
Boron atomic layer sheet and laminated sheet, method for manufacturing the same, and liquid crystals
US-2021363021-A1 · Nov 25, 2021 · US
Electronic switching element
US-2021292651-A1 · Sep 23, 2021 · US
Phase difference film, method for manufacturing phase difference film, polarizing plate, and liquid crystal display device
US-2021278728-A1 · Sep 9, 2021 · US
Fluoro-boron Pyrrole Liquid Crystal Compounds Containing 8-(bisphenylethynyl)-ester Group Flexible Multiple Ring, Preparation Method and Use Thereof
US-2021277027-A1 · Sep 9, 2021 · US
Electronic switching element
US-11063227-B2 · Jul 13, 2021 · US
Liquid crystal composition, optical film, polarizing plate, and image display device
US-10961458-B2 · Mar 30, 2021 · US
Optical film, polarizing plate, and image display device
US-10908338-B2 · Feb 2, 2021 · US
Electronic switching element
US-2019312216-A1 · Oct 10, 2019 · US
Compounds for electronic devices
US-10439145-B2 · Oct 8, 2019 · US
Liquid crystal composition, optical film, polarizing plate, and image display device
US-2019218460-A1 · Jul 18, 2019 · US
Optical film, polarizing plate, and image display device
US-2019170922-A1 · Jun 6, 2019 · US
Liquid crystal composition, liquid crystal display device including the same, and method of manufacturing liquid crystal display device
US-10041001-B2 · Aug 7, 2018 · US
Polymerizable composition and film using same
US-2017292075-A1 · Oct 12, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K19/404?
- CPC C09K19/404 is the Cooperative Patent Classification code for “containing boron or phosphorus.”
- How many patents are filed under CPC C09K19/404 (containing boron or phosphorus)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC C09K19/404 growing?
- Publication counts under this code: 4 in 2023 vs 2 in 2025 (latest complete years).