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:
Mar. 22, 2005
Filed:
Nov. 14, 2002
Malcolm V. Hawkes, Escondido, CA (US);
Jon Stuart Wright, San Marcos, CA (US);
Robert S. Burgoyne, Oceanside, CA (US);
Jeffrey L. Fish, San Diego, CA (US);
Malcolm V. Hawkes, Escondido, CA (US);
Jon Stuart Wright, San Marcos, CA (US);
Robert S. Burgoyne, Oceanside, CA (US);
Jeffrey L. Fish, San Diego, CA (US);
Electro Scientific Industries, Inc., Portland, OR (US);
Abstract
An apparatus for accurately locating a micro-electronic chip in a chip-holding cavity for visual testing, the chip having at least a front wall and a pair of opposed, spaced-apart side walls, wherein the front wall meets with each of the side walls to form opposed, spaced-apart first and second front edges, comprising a cavity side wall formed to juxtapositionally abut at least one of the side walls of the chip, the cavity side wall having formed therein a depression creating a shadow projecting forward from the depression, wherein the first front edge of the chip forms a border of the shadow to form an objectively measurable contrast in grayness between the shadow and the chip.