Patents by Inventor Walter Groesbeck DeWitt, III

Walter Groesbeck DeWitt, III 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).

  • High impact resistant acrylic coating compositions and coated articles
    Patent number: 4107235
    Abstract: Coating compositions comprising an acrylic solution polymer having a molecular weight of about 30,000 to 250,000 and a Tg above 65.degree. F., a solvent therefor, and a compatible acrylic polymer having a Tg less than -20.degree. F., which is soluble in the same solvent, coated substrates, and especially coated impact-modified acrylic sheets having improved resistance to impact.
    Type: Grant
    Filed: October 20, 1977
    Date of Patent: August 15, 1978
    Assignee: Rohm and Haas Company
    Inventor: Walter Groesbeck DeWitt, III