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:
Nov. 12, 1991
Filed:
Nov. 20, 1990
Applicant:
Inventors:
Michael W Mueller, Plankstadt, DE;
Ekkehard Schwab, Neustadt, DE;
Helmut Auweter, Limburgerhof, DE;
Rainer Feser, Gruenstadt, DE;
Bernhard Boettcher, Weisenheim, DE;
Norbert Mueller, Friedelsheim, DE;
Wolfgang Kochanek, Neustadt, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
252 6251 ; 423607 ;
Abstract
Stabilized acicular ferromagnetic chromium dioxide is prepared by reductive treatment of the chromium dioxide with Na.sub.2 [Fe(CO).sub.4 ], and this material is present in magnetic recording media.
Mueller, Michael. (1991). Preparation of stabilized chromium dioxide with sodium (U.S. Patent No. 5064549). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5064549
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile