Patents by Inventor Mark W. Cadwallader

Mark W. Cadwallader 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).

  • Apparatus and method for lining landfills, reservoirs, hazardous waste disposal sites and the like
    Patent number: 5139853
    Abstract: An improved method and a product for waterproofing soil utilizing a flexible plastic sheet for providing a water barrier and for providing a means of reflecting light sufficient to prevent damage to the sheet and the underlying soil from direct sunlight comprising a uniform density or multiple-density plastic sheet material which has been manufactured to a desired thickness to contain an upper surface cpable of reflecting light.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: August 18, 1992
    Assignee: Gundle Lining Construction Corporation
    Inventors: Michael C. Mathieson, Mark W. Cadwallader
  • Apparatus and method for lining landfills, reservoirs, hazardous waste disposal sites and the like
    Patent number: RE35272
    Abstract: An improved method and a product for waterproofing soil utilizing a flexible plastic sheet for providing a water barrier and for providing a means of reflecting light sufficient to prevent damage to the sheet and the underlying soil from direct sunlight comprising a uniform density or multiple-density plastic sheet material which has been manufactured to a desired thickness to contain an upper surface cpable of reflecting light.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: June 11, 1996
    Assignee: GSE Lining Technology, Inc.
    Inventors: Michael C. Mathieson, Mark W. Cadwallader