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. 14, 2001
Filed:
Jun. 03, 1999
Applicant:
Inventors:
Toshio Kawamura, Ibaraki, JP;
Takashi Suzumura, Ibaraki, JP;
Makoto Aida, Ibaraki, JP;
Hiroshi Sugimoto, Ibaraki, JP;
Shigeharu Takahagi, Ibaraki, JP;
Yuju Endo, Ibaraki, JP;
Toshi Sasaki, Ibaraki, JP;
Hiroyuki Takasaka, Ibaraki, JP;
Assignee:
Hitachi Cable Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/120 ; B26D 1/00 ;
U.S. Cl.
CPC ...
B32B 3/120 ; B26D 1/00 ;
Abstract
A method for punching an insulating film is composed of using plural divided punches having a clearance between each two of the divided punches. The clearance absorbs thermal expansion of the divided punches caused by receiving a heat from a heater. A punched insulating film is stuck to a lead frame by being pressed between the divided punches and the heater.