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:
Nov. 18, 2014
Filed:
Feb. 08, 2011
Applicant:
Atsuyuki Doi, Saitama, JP;
Inventor:
Atsuyuki Doi, Saitama, JP;
Assignee:
Advantest Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/26 (2014.01); G01R 31/28 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2889 (2013.01); G01R 31/2808 (2013.01); G01R 31/2891 (2013.01); G01R 31/2887 (2013.01);
Abstract
Providing a test head capable of suppressing a probe card from bending. The test headcomprises: a test head main bodyhaving a frame; an interface apparatuselectrically connecting a probe cardand the test head main bodywith each other; and a brake unitpositioned between the probe cardand the frameto transmit a pressing force F applied to the probe cardto the frame