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:
Feb. 21, 2012
Filed:
Aug. 17, 2006
Craig Z. Foster, Los Gatos, CA (US);
Ray Wakefield, Palo Alto, CA (US);
Craig Z. Foster, Los Gatos, CA (US);
Ray Wakefield, Palo Alto, CA (US);
Nextest Systems Corporation, San Jose, CA (US);
Abstract
An apparatus for use with a wafer prober and a probe card comprising a stiffening member having a feature defining a first plane. The stiffening member is mountable atop the central portion of the probe card. A reference member is provided to mount to the wafer prober and has an underside with a feature defining a second plane. When the feature of the stiffening member defining the first plane is urged against the feature of the reference member defining a second plane the probe tips of the probe card are substantially planarized relative to the wafer prober.