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:
Jun. 17, 2003
Filed:
May. 14, 2002
Applicant:
Inventor:
Paul Cao, Ossining, NY (US);
Assignee:
Engelhard Corporation, , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C 1/22 ;
U.S. Cl.
CPC ...
C09C 1/22 ;
Abstract
A bismuth oxychloride effect pigment exhibiting improved light stability has a discontinuous coating of hydrous iron oxide on the crystals of the bismuth oxychloride. The pigment is prepared by growing the bismuth oxychloride crystals, adding a hydrolyzable iron salt thereto and then hydrolyzing the iron salt.