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:
Dec. 15, 1992
Filed:
Jul. 01, 1991
Applicant:
Inventor:
Taketoshi Itoyama, Tokorozawa, JP;
Assignee:
Tokyo Electron Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
3241 / ; 324 725 ; 3241 / ;
Abstract
A proper apparatus includes a test head for generating a test signal. A probe card is fixed removably on the test head. The probe card supplies the test signal to a test piece when the probe card electrically contacts the test piece, and tests electric characteristics of the test piece.