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:
Mar. 21, 2006
Filed:
Aug. 27, 2003
Kimberly Ann Stewart, Bethel Park, PA (US);
Terry J. Detrie, Canonsburg, PA (US);
Gilbert B. Burkhart, Iii, Washington, PA (US);
Daniel R. Swiler, Washington, PA (US);
Kimberly Ann Stewart, Bethel Park, PA (US);
Terry J. Detrie, Canonsburg, PA (US);
Gilbert B. Burkhart, III, Washington, PA (US);
Daniel R. Swiler, Washington, PA (US);
Ferro Corporation, Cleveland, OH (US);
Abstract
The present invention provides inorganic pigments including cobalt and aluminum having the spinel crystalline structure that exhibit improved color and/or weatherability in paint and polymer applications. Inorganic pigments according to the invention are formed by adding small quantities of a phosphate compound such as aluminum phosphate and, optionally, chromium (III) oxide, to a raw batch that includes a mixture of cobalt-containing and aluminum-containing inorganic pigment precursors, and calcining the raw batch to obtain the inorganic pigment.