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. 13, 1999
Filed:
Mar. 26, 1997
Karlheinz Boneberger, Erlenbach, DE;
Lothar Haase, Morsbach/Sieg, DE;
Horst Schafer, Aschaffenburg, DE;
Werner Steffan, Eichenbuhl, DE;
Peter Zang, Grossostheim, DE;
CIBA Vision Corporation, Duluth, GA (US);
Abstract
In a process for the manufacture of contact lenses, a polymerizable contact lens material is dispensed into a mould half (1) and the mould is subsequently closed by means of the second mould half (2). The material located between the two mould halves in the moulding cavity (12) is then polymerized, thus forming an as yet unhydrated contact lens (CL). The moulding surface of one of the two mould halves (1, 2) is pre-treated, before use, in a region (20) outside the optically active zone of the contact lens (CL) in such a manner that, when the mould is opened, the contact lens (CL) adheres to the pre-treated mould half.