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. 14, 2007
Filed:
Sep. 14, 2005
Barry L. Atkins, Chicago, IL (US);
Norbert Doerr, Griesheim, DE;
Alfred Fischer, Niedernberg, DE;
Michael Hugh Quinn, Suwanee, GA (US);
Roland Schmieder, Aschaffenburg, DE;
Robert Carey Tucker, Suwanee, GA (US);
Barry L. Atkins, Chicago, IL (US);
Norbert Doerr, Griesheim, DE;
Alfred Fischer, Niedernberg, DE;
Michael Hugh Quinn, Suwanee, GA (US);
Roland Schmieder, Aschaffenburg, DE;
Robert Carey Tucker, Suwanee, GA (US);
Novartis AG, Basel, CH;
Abstract
A method comprises the steps of (a) providing a water based ink in at least one cliché with a contact lens pattern; (b) transferring the water based ink from the cliché to at least a surface of at least a contact lens forming mold by means of at least a transfer pad; (c) at least partially curing the ink transferred on the mold to form a colored film; (d) dispensing a hydrogel lens-forming material into a lens-forming cavity of the mold; and (e) curing the lens-forming material within the lens-forming cavity to form the contact lens, whereby the colored film detaches from the molding surface and becomes integral with the body of the contact lens; characterized in that the relative air humidity in the immediate vicinities of the transfer pad/s is kept higher than 50% at standard temperature and pressure conditions during ink transfer.