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:
Aug. 30, 1988
Filed:
Jul. 07, 1986
Applicant:
Inventors:
Seiji Sakamoto, Yokohama, JP;
Yoshio Meguro, Yokohama, JP;
Assignee:
Diafoil Company, Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428143 ; 427127 ; 427128 ; 428148 ; 428149 ; 428156 ; 428323 ; 428327 ; 428328 ; 428329 ; 428331 ; 428339 ; 428409 ; 428480 ; 428483 ; 428694 ; 428695 ; 428900 ; 428910 ;
Abstract
There is disclosed a polyester film suitable for use in magnetic tapes having the characteristics represented by the following equations: ##EQU1## wherein N.sub.1 is the number of peaks of surface projections per millimeter;