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:
Jun. 06, 2000
Filed:
Jul. 15, 1998
Applicant:
Inventor:
Kiyoshi Nikawa, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324765 ; 324760 ; 324752 ;
Abstract
While an ultrasonic wave beam producing device scans an ultrasonic wave beam 5 across a semiconductor integrated circuit chip 2, a current through the circuit chip is detected. In this way, the semiconductor integrated circuit chip may be accurately tested, and the creation of electron-hole pairs is avoided.