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:
Oct. 08, 1985
Filed:
Apr. 18, 1983
Applicant:
Inventors:
Masao Asano, Tokyo, JP;
Tetsuro Sunaga, Hachioji, JP;
Hideki Murata, Akishima, JP;
Kazumasa Matsumoto, Tokyo, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; G11B / ;
U.S. Cl.
CPC ...
428413 ; 252 6254 ; 4284231 ; 4284259 ; 428532 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium having a magnetic layer containing a urethane resin having a tensile strength of less than 200 kg/cm.sup.2 and an elongation at break of 900% or more, and another urethane resin having a tensile strength of 200 kg/cm.sup.2 or more and an elongation at break of less than 900%. This recording medium has good surface properties, good magnetic particles' orientation, great durability, and high wear resistance and produces high output.