Patents by Inventor Ray Spratt

Ray Spratt 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).

  • Method of designing progressive lenses
    Publication number: 20050270482
    Abstract: A method and system for designing a progressive lens is disclosed. The method includes modifying a reference progressive lens design having a peripheral design which is suitable for a wearer and design features with known values. The modification of the reference progressive lens design provides a new progressive lens design in which at least one of the design features have been customised according to the wearer's preference. The new progressive lens design has substantially the same peripheral design as the reference progressive lens design.
    Type: Application
    Filed: May 19, 2005
    Publication date: December 8, 2005
    Applicant: SOLA INTERNATIONAL HOLDINGS LIMITED
    Inventors: Scott Fisher, Saulius Varnas, Ray Spratt