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.

Date of Patent:
Sep. 24, 1991

Filed:

Feb. 09, 1990
Applicant:
Inventors:

Sadamu Kuse, Minoo, JP;

Kimihiko Kaneno, Nagaokakyo, JP;

Seigi Kawarai, Ashiya, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428694 ; 428900 ;
Abstract

A magnetic recording tape comprising a non-magnetic substrate, a magnetic layer which comprises magnetic powder and a binder resin coated on one surface of the substrate and a back coating layer which comprises non-magnetic powder and a binder resin coated on the other surface of the substrate, wherein an amount of compounds having a molecular weight of 1000 to 5000, as converted to polystyrene molecular weight, extracted with tetrahydrofuran and converted to a polystyrene extraction amount, per 3 .mu.m thickness from the magnetic layer (W.sub.M) and per 1 .mu.m thickness of from the back coating layer (W.sub.B), are both less than 200 mg/m.sup.2, which tape has improved traveling stability and durability.


Find Patent Forward Citations

Kuse, Sadamu. (1991). Magnetic recording tape containing low levels of compounds with (U.S. Patent No. 5051319). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5051319

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

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