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:
Oct. 19, 1999
Filed:
Nov. 18, 1997
Koji Ino, Kariya, JP;
Yusuke Watanabe, Obu, JP;
Denso Corporation, Kariya, JP;
Abstract
A probe made of copper and supported by a movable arm via a load cell and a jig has a joining surface having good wettability with solder at the tip end thereof and has a covering portion having poor wettability with the solder around the circumferential periphery. The solder and flux are stuck to the joining surface and the solder is put into contact with a bump electrode to be tested on a substrate in this state. Then, the solder is melted by an induction heating coil and then cooled down and solidified to join the bump electrode to be tested to the probe. The bump electrode is broken by pulling up the probe in this state at a constant speed and at the same time the pulling force exerted on the probe is measured by the load cell.