Patents by Inventor Leonard M. Walewski

Leonard M. Walewski 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).

  • Inhibiting styrene emissions in unsaturated polyester resins
    Patent number: 4546142
    Abstract: An unsaturated polyester exhibiting low styrene emissions comprises conventional phthalic and maleic anhydrides together with specific amounts of diethylene glycol, styrene, and a particular type of paraffin wax.
    Type: Grant
    Filed: January 8, 1985
    Date of Patent: October 8, 1985
    Assignee: United States Steel Corporation
    Inventor: Leonard M. Walewski