Patents Assigned to Wernicke X Co. GmbH
  • Process for finishing the edge of corrective lenses made of plastic
    Patent number: 5410843
    Abstract: An improved process for finishing the edge of corrective lenses made of thermoplastic material or of a mixture of thermoplastic and thermosetting plastic materials. This process includes the steps of dry pre-profiling and dry post-profiling the corrective lens and the further subsequent additional process step of wet final finishing and/or calibrating the corrective lens by using an additional fine grinding wheel and applying cooling liquid to the contact area between said corrective lens and said fine grinding wheel.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: May 2, 1995
    Assignee: Wernicke X Co. GmbH
    Inventor: Lutz Gottschald