Patents by Inventor Larry D. Lawrence

Larry D. Lawrence 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).

  • Formulating and delivery system for emulsion blasting
    Patent number: 4526633
    Abstract: The invention is a method and apparatus for formulating and delivering emulsion slurry blasting agents in a self-contained, "on-site," movable system, such as a heavy duty truck which houses the necessary apparatus for formulating the emulsion blasting agent. A key part of the apparatus is a blender in which the emulsion phase is formed.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: July 2, 1985
    Assignee: IRECO Incorporated
    Inventors: Larry D. Lawrence, Walter B. Sudweeks, Raymond D. Larsen
  • Thermally stable emulsion explosive composition
    Patent number: 4322258
    Abstract: The invention relates to a thermally stable, cap-sensitive water-in-oil emulsion explosive composition having a discontinuous aqueous oxidizer salt solution phase containing calcium nitrate, a continuous oil or water-immiscible liquid organic phase, an emulsifier, and a density reducing agent.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: March 30, 1982
    Assignee: IRECO Chemicals
    Inventors: Walter B. Sudweeks, Larry D. Lawrence
  • Emulsion blasting agent sensitized with perlite
    Patent number: 4231821
    Abstract: The invention relates to cap-sensitive water-in-oil emulsion blasting agents having a discontinuous aqueous phase, a continuous oil or water-immiscible liquid organic phase, an emulsifier, and perlite of fine particle size.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: November 4, 1980
    Assignee: IRECO Chemicals
    Inventors: Walter B. Sudweeks, Larry D. Lawrence