Cationic direct dyes
US-10494527-B2 · Dec 3, 2019 · US
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from coupling components containing heterocyclic rings
from coupling components containing heterocyclic rings · 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 | C09B44/08 |
| Official title | from coupling components containing heterocyclic rings |
| Display label | from coupling components containing heterocyclic rings |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 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
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