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:
Feb. 17, 2004
Filed:
Sep. 05, 2002
Applicant:
Inventors:
Assignee:
Merck Patent Gesellschaft mit beschränkter Haftung, Darmstadt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C 1/36 ;
U.S. Cl.
CPC ...
C09C 1/36 ;
Abstract
The invention relates to intensely colored interference pigments based on multi-layered plate-like substrates with at least two sequences of layers consisting of (A) a colorless layer with a refraction index n≦1,8; (B) a high-index layer consisting of a mixture of TiO and Fe O in a ratio of 1:0.1 to 1:5 and optionally, one or more metal oxides in quantities of to layer (B); and optionally (C) an outer protective layer.