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:
Apr. 28, 1981
Filed:
Sep. 21, 1978
Applicant:
Inventors:
Gunter Buxbaum, Krefeld, DE;
Bernd Stephan, Bederkesa, DE;
Franz Hund, Krefeld, DE;
Gerhard Schroeder, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; B05D / ;
U.S. Cl.
CPC ...
252 6253 ; 427220 ; 4272556 ;
Abstract
A finely divided magnetite pigment such as is used in magnetic tapes is stabilized against oxidation by contact with a heterocyclic nitrogen compound such as morpholine, triazole, piperazine or substitution products thereof. The heterocyclic compound can be applied as a solution or in vapor form.
Buxbaum, Gunter. (1981). Stabilization of magnetite pigments with heterocyclic nitrogen compounds (U.S. Patent No. 4264462). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4264462
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile