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:
Apr. 01, 1997
Filed:
Mar. 20, 1995
Applicant:
Inventors:
Koichi Harada, Iruma, JP;
Kuniyuki Takahashi, Musashimurayama, JP;
Iwao Takahashi, Musashimurayama, JP;
Assignee:
Kabushiki Kaisha Shinkawa, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
219 5621 ; 21914521 ;
Abstract
An electrode used in a wire bonding method and apparatus for applying an electric discharge to an end of a bonding wire so as to form a ball at the end of the bonding wire. The electrode is provided with an obliquely cut surface at one end so that the end of the electrode is in a semicircular shape, and an edge area of the semicircular end surface is positioned to face upward and used as an electric discharge part. The electrode can be covered by a ceramic material except for the semicircular end surface.