Cationic direct dyes
US-10494527-B2 · Dec 3, 2019 · US
This page is not indexed by search engines while we improve data quality.
Anthraquinone-azo dyes {(from diazotised aminoanthracene C09B29/0022, azo dyes containing hydroxyl groups acylated with polyfunctional anthraquinone derivatives C09B43/26)}
Anthraquinone-azo dyes {(from diazotised aminoanthracene C09B29/0022, azo dyes containing hydroxyl groups acylated with polyfunctional anthraquinone derivatives C09B43/26)} · 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 | C09B56/12 |
| Official title | Anthraquinone-azo dyes {(from diazotised aminoanthracene C09B29/0022, azo dyes containing hydroxyl groups acylated with polyfunctional anthraquinone derivatives C09B43/26)} |
| Display label | Anthraquinone-azo dyes {(from diazotised aminoanthracene C09B29/0022, azo dyes containing hydroxyl groups acylated with polyfunctional anthraquinone derivatives C09B43/26)} |
| Total patents | 4 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cationic Direct Dyes
US-2018244924-A1 · Aug 30, 2018 · US
Anthraquinone azo dyes
US-9546279-B2 · Jan 17, 2017 · US
Anthraquinone Azo Dyes
US-2015096132-A1 · Apr 9, 2015 · US