Patents by Inventor Larry M. Girdler

Larry M. Girdler 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).

  • Bitumen antistripping agent
    Patent number: 5037474
    Abstract: A bitumen antistripping agent is prepared by reacting an epoxy compound with either phosphoric acid or a partial ester of phosphoric acid at a molar ratio of between 1:1 and 1:20.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: August 6, 1991
    Assignee: Morton International, Inc.
    Inventors: Keith A. Mesch, Larry M. Girdler
  • Metal amine complexes for improving the bond strength properties of asphalt
    Patent number: 4775419
    Abstract: Metal amine complexes are formed from amines adhering to the general formulas ##STR1## by reaction with various metal salts. Prior to reaction with various metal salts, the above amines may first be reacted with a formaldehyde source or with a formaldehyde source followed by an epoxide or with an epoxide or with an epoxide followed by a formaldehyde source. The resultant metal amine complexes are then employed in asphalt compositions in order to increase the overall strength of such compositions.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: October 4, 1988
    Assignee: Morton Thiokol, Inc.
    Inventors: Dennis W. Gilmore, Larry M. Girdler, Thomas G. Kugele