Patents by Inventor Arthur J. Drew, Jr.

Arthur J. Drew, Jr. 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).

  • Lens mold assembly
    Patent number: 4921205
    Abstract: A mold assembly for casting optical lenses in which an integral lens blank-mold cup unit is created by placing liquid monomers in a cup mold which tightly adheres to polymerized lens material. A radial die is disposed upon the cup mold to contain the monomers during polymerization and to provide the polymerized material with an optical surface. A contact lens is manufactured from the integral lens blank-mold cup unit by machining off the first cup and then extraneous portions of the blank to create a finished lens.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: May 1, 1990
    Assignee: Sola USA, Inc.
    Inventors: Arthur J. Drew, Jr., Donald J. Ratkowski