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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.:

US 4645723 B1

PDFFull Text
Date of Patent:
Feb. 24, 1987

Filed:

Feb. 15, 1985

Production of magnetic recording media possessing a backing coating, and

Applicant:
Inventors:

Milena Melzer, Ludwigshafen, DE;

Hermann Roller, Ludwigshafen, DE;

Norbert Schneider, Altrip, DE;

Horst Fitterer, Mannheim, DE;

Wulf Munzner, Frankenthal, DE;

Assignee:

BASF Aktiengesellschaft, , DE;

Attorney:

Keil & Weinkauf

Primary Examiner:

Ellis P Robinson

Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428694 ; 427128 ; 427131 ; 428336 ; 428900 ;
Abstract

A process for the production of magnetic recording media by applying a magnetic layer, which consists essentially of magnetic material finely dispersed in organic polymers, to one side of a flexible base, and applying a non-magnetizable backing coating which is free of inorganic solids to that side of the base which is opposite the magnetic layer, wherein the backing coating consists of two or more polymers which are incompatible with one another and have precipitated from a solvent mixture, and magnetic recording media produced by this process.

Find Patent Forward Citations

Melzer, Milena. (1987). Production of magnetic recording media possessing a backing coating, and (U.S. Patent No. 4645723). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4645723

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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