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:
Mar. 23, 1999
Filed:
Aug. 21, 1997
Applicant:
Inventors:
Nobuto Yamazaki, Kunitachi, JP;
Minoru Torihata, Musashimurayama, JP;
Tatsunari Mii, Musashimurayama, JP;
Assignee:
Kabushiki Kaisha Shinkawa, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; B23K / ;
U.S. Cl.
CPC ...
228-11 ; 228-45 ;
Abstract
In a capillary used in a wire bonding apparatus that has a wire threading hole through which a bonding wire of 10 to 30 .mu.m diameter passes and is provided with two chamfers, i.e., lower and upper chamfers, near the tip end of the wire threading hole, the upper chamfer has a chamfer angle of 3 to 19 degrees and a depth of 20 to 50 microns.