Patents by Inventor Walter D. Carroll

Walter D. Carroll 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 of producing methane gas from a coal seam
    Patent number: 5462116
    Abstract: A method and system for producing coal-bed methane gas from a wellbore is disclosed. The method consists of drilling a wellbore so that a coal seam is intersected, and thereafter casing and completing the wellbore. A transducer is lowered into the wellbore, with the transducer capable of converting electrical energy to a sound energy. The transducer is activated, and methane gas is then produced from the coal seam. The energy to the transducer may be varied so that a maximum rate of methane gas production is obtained.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: October 31, 1995
    Inventor: Walter D. Carroll