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. 10, 1992
Filed:
Feb. 20, 1990
Applicant:
Inventors:
James F Cordaro, Alfred, NY (US);
Howard C Rafla-Yuan, Alfred Station, NY (US);
Assignee:
International Lead Zinc Research Organization, Inc., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
106425 ; 423622 ; 252 / ; 106426 ;
Abstract
There is disclosed a doped zinc oxide pigment composition and method of preparing said composition, wherein the dopant is uniformly dispersed in the zinc oxide matrix in the form of a solid solution such that the mechanism by which undoped zinc oxide absorbs blue or near ultraviolet light is suppressed, thereby yielding a whiter composition. Preferred dopants are Al and Li.