Patent · US Active

Method for colouring hair including pretreatment

US12226515B2 · kind B2 · utility

0Cited by

1References

7Claims

0Family size

Assignee

WELLA OPERATIONS US, LLC · US

Inventors

Lars Siegfried Dahne · Berlin, DE
Mandy Hecht · Falkensee, DE
Mathias Kurt Herrlein · Kronberg, DE
Katrin Kaestle · Ober-Ramstadt, DE
Bryan Patrick Murphy · Loveland, US
Monica Jo Patten · Sharonville, US

Key dates

Filing date	Apr 25, 2017
Grant date	Feb 18, 2025
Priority date	—
Expiry date	Apr 25, 2037

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/884
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Method for colouring hair comprising pretreating the hair with at least one primer composition before treating the hair with a polymeric hair colouring system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.