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:
May. 22, 2007
Filed:
Dec. 16, 2004
Applicants:
Donald Charles Grove, Layton, UT (US);
Lloyd G. Allred, Bountiful, UT (US);
Inventors:
Donald Charles Grove, Layton, UT (US);
Lloyd G. Allred, Bountiful, UT (US);
Assignee:
Bausch and Lomb Incorporated, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ophthalmic placido patternis used to determine a curvature of an anterior surface of a cornea of an eye. The patternincludes a series of alternating light and dark concentric ringsandcentered about a central point. A series of shaped geometric shapesandare placed about at least some of the concentric ringsand. The shapesandare of a contrasting color with respect to the ringoron which the shapeoris placed.