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:
Apr. 09, 2013
Filed:
Feb. 13, 2009
Applicant:
Michael R. Ehrick, Toledo, OH (US);
Inventor:
Michael R. Ehrick, Toledo, OH (US);
Assignee:
Pilkington Group Limited, Lathom, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/86 (2006.01);
U.S. Cl.
CPC ...
Abstract
A non-contact, opto-electronic method to determine glass surface shape involves pattern projection in reflection from a screen. The pattern is formed of black and white or coloured squares with a central reference pattern taken as origin of the x-y axes in the subsequent quantitative analysis of the optical distortion in formed glass sheets or panels.