Patents by Inventor Ian D. Rosbotham

Ian D. Rosbotham 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).

  • Polyol compositions and polyurethane foams manufactured therefrom
    Patent number: 4576974
    Abstract: A mixture of polyols useful in preparing closed cell rigid foams. The polyols are made by blending a polyester polyol derived from succinic, glutaric and adipic acids and a non-polymeric or polyoxyalkylene polyol having a functionality from 3 to 4. When reacted with an organic polyisocyanates, the resulting rigid polyurethane foams are dimensionally stable and less flammable compared with polyether-based products.
    Type: Grant
    Filed: February 11, 1985
    Date of Patent: March 18, 1986
    Assignee: Imperial Chemical Industries, PLC
    Inventors: William G. Carroll, Ian D. Rosbotham