Patent · US Active

Effect pigments

US11773270B2 · kind B2 · utility

0Cited by

12References

18Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Gerhard Pfaff · Mainburg, DE
Stephanie Andes · Hanau, DE
Klaus Ambrosius · Frankfurt, DE
Ralf Petry · Griesheim, DE
Michael Roesler · Lexington, US
Sabine Schoen · Darmstadt, DE

Key dates

Filing date	Jul 6, 2020
Grant date	Oct 3, 2023
Priority date	—
Expiry date	Aug 15, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09C2200/306
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to effect pigments which are based on flake-form substrates having a circular form factor of 1.2-2 and are coated with at least one high-refractive-index layer, and to the use thereof, inter alia in paints, coatings, printing inks, plastics and in cosmetic formulations.

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