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. 11, 2001
Filed:
Jan. 28, 2000
Applicant:
Inventor:
Jeffrey S. McMullin, Portland, OR (US);
Assignee:
Credence Systems Corporation, Fremont, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 1/04 ;
U.S. Cl.
CPC ...
G01R 1/04 ;
Abstract
A calibration unit for a semiconductor integrated circuit tester includes a frame, a manipulator arm which extends in cantilever fashion from the frame, and a calibration head attached to the manipulator arm at its distal end and having a downwardly directed test interface for mating with a test head in DUT up orientation.