Patents by Inventor Richard A. Langdale-Smith

Richard A. Langdale-Smith 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).

  • Polymer/polyols and process for production thereof
    Patent number: 4208314
    Abstract: This invention relates to a novel process for producing polymer/polyols characterized by the use of specific amounts of particular monomer combinations and by maintaining a low monomer concentration throughout the reaction mixture during the process. The monomer combinations are acrylonitrile or methacrylonitrile and styrene or alpha-methyl styrene. The process produces novel polymer/polyols characterized by their convertibility to low density, water-blown polyurethane foams having reduced scorch and by the relatively small size of the polymer particles.
    Type: Grant
    Filed: November 20, 1973
    Date of Patent: June 17, 1980
    Assignee: Union Carbide Corporation
    Inventors: David C. Priest, Richard A. Langdale-Smith