Patents by Inventor Charles E. Downs

Charles E. Downs 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).

  • Three directional drilling process for environmental remediation of contaminated subsurface formations
    Patent number: 5186256
    Abstract: The present invention resides in a three directional horizontal drilling process which is suitable for the in-situ treatment or extraction of undesirable contaminants from subsurface formations. A first extraction well is drilled utilizing three directional horizontal drilling techniques in the general vicinity of a contaminated subsurface formation. A second injection well is strategically drilled to direct contaminants into a subsurface screen system in the extraction well, thus facilitating the extraction and collection of undesirable contaminants.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: February 16, 1993
    Assignee: Conoco Inc.
    Inventor: Charles E. Downs
  • Computer mouse cover
    Patent number: D453335
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: February 5, 2002
    Assignee: Right Brain Ideas, Inc.
    Inventor: Charles E. Downs