Patents by Inventor Thomas H. Weidner

Thomas H. Weidner 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 system for removing and/or causing recycling of materials
    Patent number: 5435835
    Abstract: A system and process for treating dust and sludge from iron and steel making operations and includes separating iron and carbon from zinc and lead. Separation is performed in a series of hydrocyclones associated in a series-parallel fashion, The iron and carbon is recycled within the iron making operation without detriment to furnace liners, Lime and flocculent are added to the lead and zinc to create a stable material suitable for landfill disposal, Sludges are consumed by injection onto a sinter strand.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: July 25, 1995
    Assignee: Bethlehem Steel Corporation
    Inventors: John D. Lynn, Thomas H. Weidner, Elmer D. Anderson, II
  • Composition and process for forming low permeability barriers for waste disposal sites
    Patent number: 5259697
    Abstract: A low-permeability barrier for waste disposal sites such as landfills and waste lagoons, and a method for constructing the same, includes a waste material. The waste material is stabilized to decrease the permeability characteristics of the waste material and may be further processed to improve the structural characteristics of the waste material and to prevent leaching of any leachable components. A method is provided for applying the waste material to the waste disposal site as a liner, interim cover, and/or final cover.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: November 9, 1993
    Assignee: Bethlehem Steel Corporation
    Inventors: Robert B. Allen, Charles E. Jablonski, John D. Lynn, Thomas H. Weidner