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:
Jun. 29, 1976
Filed:
Jun. 28, 1974
Applicant:
Inventors:
Takashi Tanabe, Sagamihara, JA;
Tomio Adachi, Sagamihara, JA;
Assignee:
Teijin Limited, Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
428155 ; 360134 ; 427129 ; 427172 ; 427173 ; 427304 ; 427315 ; 427316 ; 427322 ; 428212 ; 428329 ; 428333 ; 428334 ; 428339 ; 428458 ; 428474 ; 428480 ; 428523 ; 428900 ;
Abstract
A magnetic recording material formed from a base film of a crystalline polymer and having a magnetic layer coated on one surface of the base film which is sufficiently smooth to prevent the occurrence of dropout and the other surface of the film being finely rugged to thereby impart good running property to the magnetic recording material.