Chromophores with New Acceptors that Increase Refractive Index
US-2026085190-A1 · Mar 26, 2026 · US
having only one heterocyclic ring at one end of the methine chain, e.g. hemicyamines, hemioxonol (styryl dyes see C09B23/14)
having only one heterocyclic ring at one end of the methine chain, e.g. hemicyamines, hemioxonol (styryl dyes see C09B23/14) · 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 | C09B23/0091 |
| Official title | {having only one heterocyclic ring at one end of the methine chain, e.g. hemicyamines, hemioxonol (styryl dyes see C09B23/14)} |
| Display label | having only one heterocyclic ring at one end of the methine chain, e.g. hemicyamines, hemioxonol (styryl dyes see C09B23/14) |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 1 |
| 2019 | 5 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 3 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Chromophores with New Ring-Locked Donors that Increase r33 and Stability
US-2026085189-A1 · Mar 26, 2026 · US
Color matched and bright fluorescent materials composed of small-molecule ionic lattices
US-12391832-B2 · Aug 19, 2025 · US
Chromophore and method for preparing chromophore, and organic electro-optic material and application of organic electro-optic material
US-2025011312-A1 · Jan 9, 2025 · US
Heat sensitive transfer recording sheet
US-11801703-B2 · Oct 31, 2023 · US
Color matched and bright fluorescent materials composed of small-molecule ionic lattices
US-2023167303-A1 · Jun 1, 2023 · US
Novel activity-based probes for neutrophil elastase and their use
US-2023140838-A9 · May 4, 2023 · US
Compound and fluorescently labeled biological substance using the same
US-2022283170-A1 · Sep 8, 2022 · US
Merocyanine-based compound and biomolecular labeling dye, kit and contrast agent composition comprising same
US-11292798-B2 · Apr 5, 2022 · US
Novel activity-based probes for neutrophil elastase and their use
US-2022050107-A1 · Feb 17, 2022 · US
Hemicyanine dyes
US-11186719-B2 · Nov 30, 2021 · US
Methine dyes
US-10961396-B2 · Mar 30, 2021 · US
Ink jet recording ink, ink jet recording method, infrared reading method, and printed material
US-10953668-B2 · Mar 23, 2021 · US
Heat sensitive transfer recording sheet
US-2020407572-A1 · Dec 31, 2020 · US
Merocyanine-based compound and biomolecular labeling dye, kit and contrast agent composition comprising same
US-2020239491-A1 · Jul 30, 2020 · US
Hemicyanine dyes
US-2019338131-A1 · Nov 7, 2019 · US
Fluorescent dye and preparation method and use thereof
US-2019241584-A1 · Aug 8, 2019 · US
Ink jet recording ink, ink jet recording method, infrared reading method, and printed material
US-2019176487-A1 · Jun 13, 2019 · US
Yellow methine dyes
US-10266697-B2 · Apr 23, 2019 · US
Novel methine dyes
US-2019112485-A1 · Apr 18, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09B23/0091?
- CPC C09B23/0091 is the Cooperative Patent Classification code for “having only one heterocyclic ring at one end of the methine chain, e.g. hemicyamines, hemioxonol (styryl dyes see C09B23/14).”
- How many patents are filed under CPC C09B23/0091 (having only one heterocyclic ring at one end of the methine chain, e.g. hemicyamines, hemioxonol (styryl dyes see C09B23/14))?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C09B23/0091 growing?
- Publication counts under this code: 3 in 2023 vs 2 in 2025 (latest complete years).