Patents by Inventor Leon C. Green

Leon C. Green 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 treating bio-degradable waste material through aerobic degradation
    Patent number: 5888022
    Abstract: A system and method are provided for treating biodegradable waste material in a landfill by aerobic degradation. Waste material is deposited in the landfill and covered. The moisture content in the landfill is increased from about 40% to about 70% and a source of oxygen is injected into the landfill to drive and maintain primarily aerobic degradation of the waste material. The temperature in the landfill is increased to substantially eliminate pathogens from the waste material. The temperature in the landfill is controlled within a range of about 130.degree. F. to about 150.degree. F. to sustain the primarily aerobic degradation. Any combination of oxygen content, moisture content, and temperature in the landfill is monitored and varied to sustain and maintain the primarily aerobic degradation in the landfill.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: March 30, 1999
    Assignee: Environmental Control Systems, Inc.
    Inventor: Leon C. Green