Patents by Inventor Louis Leonard Wood

Louis Leonard Wood 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).

  • Heavily loaded flame retardant urethane and method
    Patent number: 4066578
    Abstract: The invention disclosed relates to a new polyurethane composition having improved flame retardance and to a method for preparing same. The present composition is prepared by using a suspending agent and a surfactant. The suspending agent may be either a surfactant or an appropriate polymer, but to control the cellular structure, a surfactant that does not perform as a suspending agent is desirable. The resultant composition may be sprayed through a high pressure spray gun while permitting formation of heavily loaded flame retardant urethane foams which are neither dusty nor lose solids upon washing.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: January 3, 1978
    Assignee: W. R. Grace & Co.
    Inventors: Robert M. Murch, Mary Lynn Wilson, Louis Leonard Wood