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:
Oct. 13, 1992
Filed:
Jan. 22, 1991
Applicant:
Inventors:
Peter Kuske, Krefeld, DE;
Gunter Buxbaum, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
106459 ; 423594 ; 423605 ; 423633 ;
Abstract
A black manganese/iron oxide pigment having a spinel structure and having the composition Mn.sub.x Fe.sub.3-x O.sub.4 wherein x has a value from 0.1 to 0.9, is prepared by the steps: