The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2018
Filed:
Oct. 10, 2010
Ulrich Schmidt, Hersbruck, DE;
Michael Gruner, Auerbach, DE;
Dirk Schumacher, Pegnitz, DE;
Gunter Kaupp, Neuhaus, DE;
Barbara Mendler, Meersburg, DE;
Ulrich Schmidt, Hersbruck, DE;
Michael Gruner, Auerbach, DE;
Dirk Schumacher, Pegnitz, DE;
Gunter Kaupp, Neuhaus, DE;
Barbara Mendler, Meersburg, DE;
ECKART GMBH, Hartenstein, DE;
Abstract
The invention relates to pearlescent pigments comprising a largely transparent platelet-shaped synthetic substrate having a density ρand at least one optically active coating having a density ρ, the substrate having an average size dfrom a range from 2.0 μm to 8.0 μm and an average height hfrom a range from 40 nm to 110 nm and the total lead content of the pearlescent pigments is ≤10 ppm. The invention further relates to a method for producing the pearlescent pigments, and also to the use thereof.