Reducing colour loss from a dyed material by using an amine salt of a carboxylic acid
US-11253453-B2 · Feb 22, 2022 · US
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Condensation products from carboxylic acids and hydroxyalkyl amine (Kritchewski bases)
Condensation products from carboxylic acids and hydroxyalkyl amine (Kritchewski bases) · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D06P1/6496 |
| Official title | {Condensation products from carboxylic acids and hydroxyalkyl amine (Kritchewski bases)} |
| Display label | Condensation products from carboxylic acids and hydroxyalkyl amine (Kritchewski bases) |
| Total patents | 4 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be growing based on the most recent years.
| Year | Patents |
|---|---|
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods, compositions and uses relating thereto
US-11234917-B2 · Feb 1, 2022 · US
Methods, compositions and uses relating thereto
US-2020030213-A1 · Jan 30, 2020 · US
Reducing colour loss from a dyed material by using an amine salt of a carboxylic acid
US-2019269590-A1 · Sep 5, 2019 · US