Patents by Inventor Marvin T. Randleman

Marvin T. Randleman 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).

  • Sag resistant at essentially 1:1 ratio two component adhesive
    Patent number: 4552934
    Abstract: Improved two component adhesives allowing the components to be mixed at essentially a 1:1 ratio, giving excellent sag resistance, low viscosity, excellent handling ability and satisfactory gel time, said adhesives being composed of a prepolymer composition and a curative composition that can be mixed preferably at 1:2 to 2:1 ratio and a curative composition composed of a mixture of a reaction product of a multiple hydroxyl polyol of relatively low equivalent weight with a small amount of an organic polyiisocyanate and a polyamine.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: November 12, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: Thomas G. Rabito, Richard L. Cline, Stephen M. Oswalt, Marvin T. Randleman, Michael E. Kimball
  • Curative for a two component isocyanate adhesive and said adhesive
    Patent number: 4373082
    Abstract: A curative for a two component isocyanate or polyurethane adhesive composed of a prepolymer component having about 3 to 15 percent free isocyanate, said curative comprising at least one polyol of about 400 to 6000 molecular weight and a polyamine with at least part of said polyol and said diamine being reacted with an organic polyisocyanate to form micelles that exhibit upon NMR examination strong urea peaks and weak urethane peaks. The curative is useful to make an adhesive that is particularly useful for adhering to metals and polyesters.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: February 8, 1983
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Michael E. Kimball, Marvin T. Randleman