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:
Nov. 09, 1993
Filed:
Aug. 03, 1992
Applicant:
Inventors:
Mahendra P Nandu, Rochester, NY (US);
Rajan S Bawa, Fairport, NY (US);
Assignee:
Bausch & Lomb Incorporated, Rochester, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-21 ; 264-26 ;
Abstract
An improved process for spincasting contact lenses with differently shaped concave lens surfaces from the same mold design comprises providing molds with uniformly shaped concave surfaces, and spincasting in the molds a series of polymerizable mixtures. Contact lenses with differently shaped concave lens surfaces are obtained by varying the ratio of the monomers and an organic diluent in the polymerizable mixtures.