Dichroic azo-azomethine dyes for liquid crystal compositions
US-12122919-B2 · Oct 22, 2024 · US
Amino-benzenes
Amino-benzenes · 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 | C09B31/043 |
| Official title | Amino-benzenes |
| Display label | Amino-benzenes |
| Total patents | 50 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 6 |
| 2017 | 5 |
| 2018 | 11 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Anisotropic light absorption film and laminate
US-12085742-B2 · Sep 10, 2024 · US
Compound, composition for anisotropic dye films including the compound, anisotropic dye film, and optical element
US-12049583-B2 · Jul 30, 2024 · US
Light absorption anisotropic layer, laminate, and infrared light sensor system
US-2024142682-A1 · May 2, 2024 · US
Compound, composition for anisotropic dye films including the compound, anisotropic dye film, and optical element
US-2023151275-A1 · May 18, 2023 · US
Dichroic azo-azomethine dyes for liquid crystal compositions
US-2022098412-A1 · Mar 31, 2022 · US
Dichroic dye compound, polarizing film, and uses thereof
US-10961456-B2 · Mar 30, 2021 · US
Coloring composition, dichroic dye compound, light absorption anisotropic film, laminate, and image display device
US-10946615-B2 · Mar 16, 2021 · US
Coloring composition, light absorption anisotropic film, laminate, and image display device
US-10745507-B2 · Aug 18, 2020 · US
Composition
US-10731078-B2 · Aug 4, 2020 · US
Composition, and optical film including the composition
US-10683456-B2 · Jun 16, 2020 · US
Anisotropic light absorption film and laminate
US-2020018879-A1 · Jan 16, 2020 · US
Composition for forming dye type polarizer and dye type polarizer
US-10527758-B2 · Jan 7, 2020 · US
Dye compound, polarizer using the dye compound, and display device using the dye compound
US-10519316-B2 · Dec 31, 2019 · US
Dichroic azo compound and composition containing the same
US-10513612-B2 · Dec 24, 2019 · US
Optical film
US-10501480-B2 · Dec 10, 2019 · US
Carrier fluid compounds and dye compounds for electrowetting apparatus
US-10338372-B2 · Jul 2, 2019 · US
Coloring composition, dichroic dye compound, light absorption anisotropic film, laminate, and image display device
US-2019001619-A1 · Jan 3, 2019 · US
Dye compound, polarizer using the dye compound, and display device using the dye compound
US-2018355181-A1 · Dec 13, 2018 · US
Coloring composition, light absorption anisotropic film, laminate, and image display device
US-2018346633-A1 · Dec 6, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09B31/043?
- CPC C09B31/043 is the Cooperative Patent Classification code for “Amino-benzenes.”
- How many patents are filed under CPC C09B31/043 (Amino-benzenes)?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC C09B31/043 growing?
- Publication counts under this code: 1 in 2023 vs 4 in 2024 (latest complete years).