Patents by Inventor Ronald L. Ayres

Ronald L. Ayres 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).

  • Apparatus for and method of pressing plastic sheets
    Patent number: 4360483
    Abstract: A peripheral edge-containing member is provided to reduce the length of the projectile path of fragmented particles expelled outwardly from the peripheral edge of a frangible pressing plate which is broken during the press-stretching or press-polishing of acrylic sheets. The acrylic sheets are fabricated for use in light weight transparencies.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: November 23, 1982
    Assignee: PPG Industries, Inc.
    Inventor: Ronald L. Ayres