Patents by Inventor Ray D. Schwenzfeier

Ray D. Schwenzfeier 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).

  • Glass multifocal ophthalmic lens with polarizing element and method of making
    Patent number: 5351100
    Abstract: The present invention includes a glass multifocal light polarizing ophthalmic lens having a glass multifocal lens portion with a multifocal element fused to a convex outer surface of the multifocal lens portion, a single vision lens portion opposing the multifocal lens portion and a polarizing film sandwiched between the multifocal lens portion and the single vision lens portion. The present invention also includes a method for making the glass multifocal light polarizing ophthalmic lens.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: September 27, 1994
    Assignee: BMC Industries, Inc.
    Inventors: Ray D. Schwenzfeier, Donald W. Hanson