Patents by Inventor Glenn L. Baughman

Glenn L. Baughman 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).

  • Bis (allyl carbonate) compositions and polymerizates therefrom
    Patent number: 4139578
    Abstract: Compositions of bis (allyl carbonate) of linear or branched alkylene glycols, unsaturated polyester resin, and unsaturated monomer, e.g., unsaturated esters and styrene, and polymerizates produced from such compositions are described. A particular embodiment described is the composition comprising 40 weight percent diethylene glycol bis (allyl carbonate), 50 weight percent poly(ethylene maleate adipate) and 10 weight percent of dimethyl maleate, and polymerizates prepared from such composition. Such polymerizates have good optical properties and are useful as lenses, e.g., ophthalmic lenses.
    Type: Grant
    Filed: November 12, 1975
    Date of Patent: February 13, 1979
    Assignee: PPG Industries, Inc.
    Inventors: Glenn L. Baughman, Henry C. Stevens