Patents by Inventor Warren D. Niederhauser

Warren D. Niederhauser 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).

  • Urethane elastomer with active hydrogen containing monoethylenically unsaturated monomer
    Patent number: RE29772
    Abstract: A urethane elastomeric impact modifier is provided for 15 rigid thermoplastic polymers. Polyester and polyether urethane elastomers are grafted to the acrylic polymers. Preferred is a polyester, diisocyanate and glycol urethane elastomer terminated with a functional monomer capable of ethylenic polymerization grafting with the acrylic polymer. The modified polymers offer an improved balance of physical properties including higher impact strength, clarity, and weather resistance.
    Type: Grant
    Filed: November 20, 1972
    Date of Patent: September 19, 1978
    Assignee: Rohm and Haas Company
    Inventors: Warren D. Niederhauser, William Bauer, Jr., Constance A. Lane, Hector Belmares-Sarabia