Deblocking contact lenses

Details Deblocking contact lenses Deblocking contact lenses

2005-09-06

2005-09-06

Vargot, Mathieu D. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Nonmechanical aftertreatment

C264S028000, C264S334000

Reexamination Certificate

active

06939487

ABSTRACT:
A method and apparatus for removing a polymeric contact lens from a mold comprising lowering the temperature of the contact lens with a cryogenic material, such as liquid nitrogen, to a temperature and for a time sufficient for the lens to release from the mold without the application of external forces.

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patent: 5607518 (1997-03-01), Hoffman et al.
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patent: 1-152015 (1989-06-01), None
patent: WO 95/20476 (1995-08-01), None
patent: WO 97/13635 (1997-04-01), None
patent: WO 98/07554 (1998-02-01), None
European Search Report.

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