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:
Aug. 14, 2007
Filed:
Oct. 11, 2005
Gerhard Pfaff, Muenster, DE;
Doreen Warthe, Griesheim, DE;
Johann Dietz, Dietzenbach, DE;
Cornelia Foerderer, Heppenheim, DE;
Gerhard Pfaff, Muenster, DE;
Doreen Warthe, Griesheim, DE;
Johann Dietz, Dietzenbach, DE;
Cornelia Foerderer, Heppenheim, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
Effect pigments having improved optical properties based on SiOflakes coated with one or more layers, where the SiOflakes have a thickness of from 50 nm to 150 nm; processes for the preparation thereof; and use of these pigments in cosmetics, paints, coatings, plastics, films, in security printing, in security features in documents and identity cards, for coloring seed, for coloring foods or in medicament coatings and for the preparation of pigment compositions and dry preparations; are disclosed.