Patents Assigned to Crehan & Fricke
  • Polyurethane foams and processes for preparation
    Patent number: 4530777
    Abstract: Polyurethane foams which may be rendered flame resistant by the addition of flame retardants are produced by reaction between a carbohydrate, a polyisocyanate and water in the presence of a suitable surfactant and polyurethane forming catalyst.
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: July 23, 1985
    Assignee: Crehan & Fricke
    Inventor: Richard B. Kennedy