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:
Feb. 11, 2002
Applicants:
Cory Watkins, Chanhassen, MN (US);
David Vaughnn, Edina, MN (US);
Inventors:
Cory Watkins, Chanhassen, MN (US);
David Vaughnn, Edina, MN (US);
Assignee:
August Technology Corp., Bloomington, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N021/00 ;
U.S. Cl.
CPC ...
Abstract
A confocal three dimensional inspection system, and process for use thereof, allows for inspecting of bumps and other three dimensional (3D) features on wafers and other semiconductor substrates. The sensor eliminates out of focus light using a confocal principal to improve depth response.