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:
Aug. 20, 2013
Filed:
Mar. 20, 2008
Applicants:
Stephen Neal Swaringen, Rockwall, TX (US);
Kelly Bruland, Portland, OR (US);
Andrew Wells, Portland, OR (US);
Inventors:
Stephen Neal Swaringen, Rockwall, TX (US);
Kelly Bruland, Portland, OR (US);
Andrew Wells, Portland, OR (US);
Assignee:
Electro Scientific Industries, Inc., Portland, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 18/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for detecting particulate contamination under a workpiece fixtured by a calibrated material handling system includes performing 3D measurements of a workpiece at multiple of positions to construct a 3D map of the workpiece, calibrating the 3D map by comparing a pre-computed calibration map to the 3D measurements, and detecting particulate contamination by processing the calibrated map.