Compound including basic dye and amino acid, hair dyeing dye, and hair dyeing composition
US-10738019-B2 · Aug 11, 2020 · US
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1,3-Diazoles or hydrogenated 1,3-diazoles {; (Benz)imidazolium}
1,3-Diazoles or hydrogenated 1,3-diazoles {; (Benz)imidazolium} · 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 | C09B44/16 |
| Official title | 1,3-Diazoles or hydrogenated 1,3-diazoles {; (Benz)imidazolium} |
| Display label | 1,3-Diazoles or hydrogenated 1,3-diazoles {; (Benz)imidazolium} |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 2 |
| 2020 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compound containing basic dye and amino acid, hair dying dye, and hair dying composition
US-2020071283-A1 · Mar 5, 2020 · US
Cationic direct dyes
US-10494527-B2 · Dec 3, 2019 · US
Agents for dyeing keratin fibres, containing at least one dimeric, dicationic azo dye with special substitution pattern
US-10406089-B2 · Sep 10, 2019 · US
Stable yellow imidazolium compounds
US-10093807-B2 · Oct 9, 2018 · US
Cationic Direct Dyes
US-2018244924-A1 · Aug 30, 2018 · US
Method of Coloring Hair with Washfast Yellow Imidazolium Direct Dye Compounds
US-2018078477-A1 · Mar 22, 2018 · US
Method of coloring hair with washfast yellow imidazolium direct dye compounds
US-9918919-B1 · Mar 20, 2018 · US
Stable violet-blue to blue imidazolium compounds
US-2018072970-A1 · Mar 15, 2018 · US
Agents for dyeing keratin fibres, containing at least one dimeric, dicationic azo dye with special substitution pattern
US-2017266093-A1 · Sep 21, 2017 · US
Thiophene azo dyes and laundry care compositions containing the same
US-9556337-B2 · Jan 31, 2017 · US
Thiophene Azo Dyes and Laundry Care Compositions Containing the Same
US-2016194499-A1 · Jul 7, 2016 · US
Thiophene azo dyes and laundry care compositions containing the same
US-9068081-B2 · Jun 30, 2015 · US