Patents by Inventor Jan Windey

Jan Windey has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Toric contact lens with axis offset compensation and method and apparatus for manufacturing same
    Patent number: 6135594
    Abstract: A contact lens and a method and apparatus for manufacturing a contact lens having areas of different thickness, the contact lens being compensated for differential shrinkage during the manufacturing process. The angular offset of the cylinder axis due to differential shrinkage is compensated for by introducing an equal and opposite offset during the manufacturing process. The axis offset caused by a particular manufacturing process is experimentally determined, i.e., for each intended cylinder axis, the corresponding offset (in terms of degrees of rotation) is determined. The lens compensation is implemented by adjusting the manufacturing process so that upon curing the lens corresponds to the desired, prescribed lens, without any axis offset.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: October 24, 2000
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Jan Windey, Susan Neadle, Derek Smith