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:
Sep. 19, 1995
Filed:
Apr. 04, 1994
Applicant:
Inventors:
Paul Klingelhoefer, Mannheim, DE;
Christoph Schwidetzky, Hassloch, DE;
Henning Wienand, Neulussheim, DE;
Norbert Mronga, Dossenheim, DE;
Ekkehard Schwab, Neustadt, DE;
Michael Nebel, Cologne, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
106456 ; 106419 ; 106459 ; 423632 ; 423633 ;
Abstract
A process for preparing transparent yellow iron oxide pigments by the precipitation of iron (II) hydroxide by adding an inorganic base to an iron (II) salt solution and subsequent oxidation to FeOOH.
Klingelhoefer, Paul. (1995). Preparation of transparent yellow iron oxide pigments (U.S. Patent No. 5451253). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5451253
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile