Patents by Inventor Henry C. French

Henry C. French 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).

  • Structure and method for handling hazardous waste materials
    Patent number: 4745952
    Abstract: A method and a structure for the handling of hazardous liquid wastes and for handling hazardous solid wastes. The method includes the positioning of hazardous waste container units at a site in which hazardous wastes are generated. The hazardous waste container units are filled with hazardous wastes at the generation site and removed from the generation site and transported to a site in which hazardous wastes are accumulated. The hazardous waste container units are emptied and cleaned for transport to the same hazardous waste generation site or to another hazardous waste generation site.Hazardous waste container units which are constructed according to this invention include a rigid container. The rigid container is encompassed by a rigid frame. The rigid frame has lift engagement elements by which the hazardous waste container unit can be lifted.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: May 24, 1988
    Assignee: Dempster Systems Inc.
    Inventor: Henry C. French