Patents by Inventor Gerald R. Heiman

Gerald R. Heiman 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).

  • Method and apparatus for fumigating grain and other commodities in bulk storage compartments
    Patent number: 4509682
    Abstract: A method of fumigating grain in the hold of a ship with receptacles that are placed on the bottom of the hold before loading of the grain, and supplied with gas-producing solid fumigant through feed tubes after the grain has been loaded into the hold. The receptacles comprise inner and outer coaxial conical screens supported over a bottom tray for collecting powder residue, the outer conical screen having an inlet fitting in its upper end for connection to a feed tube, and being reinforced by a framework for sustaining the weight of the grain.
    Type: Grant
    Filed: October 13, 1982
    Date of Patent: April 9, 1985
    Assignee: Pestcon Systems, Inc.
    Inventors: Gerald R. Heiman, Frank Fleck