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:
Jan. 14, 1997
Filed:
Jan. 16, 1996
Applicant:
Inventors:
Toshikatsu Hiroe, Ibaraki, JP;
Kenichi Kaneko, Ibaraki, JP;
Noboru Imai, Ibaraki, JP;
Hiroyuki Takasaka, Ibaraki, JP;
Toshio Kawamura, Ibaraki, JP;
Assignee:
Hitachi Cable, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428343 ; 428344 ; 4284735 ; 428209 ;
Abstract
The occurrence of burrs and chips in punching an insulating film is suppressed by adjusting an edge tearing resistance of the insulating film. The edge tearing resistance is preferably 50 to 70 kgf/20 mm for the purpose of suppressing the burrs and the chips.