Patents by Inventor James A. Gill

James A. Gill 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).

  • Filter element with porous nickel-based alloy substrate and metal oxide membrane
    Publication number: 20030000891
    Abstract: Powdered nickel-based alloys having substantial amounts of chromium and molybdenum are molded and sintered to form tubular filter supports. Metal oxide particulates, preferably titanium oxide, are impregnated into the interior surfaces of the tubular elements and sintered to create 0.1 micron filter membranes. Hastelloy C-22 is a preferred nickel-based alloy for forming the porous metal support, while rutile is preferred as a starting material for forming the filter membrane. The resultant porous metal/metal oxide filter elements have superior resistance to chemical attack in high chloride, low pH environments.
    Type: Application
    Filed: July 23, 2002
    Publication date: January 2, 2003
    Applicant: GRAVER TECHNOLOGIES, INC.
    Inventor: James A. Gill
  • Filter element with porous nickel-based alloy substrate and metal oxide membrane
    Patent number: 6432308
    Abstract: Powdered nickel-based alloys having substantial amounts of chromium and molybdenum are molded and sintered to form tubular filter supports. Metal oxide particulates, preferably titanium oxide, are impregnated into the interior surfaces of the tubular elements and sintered to create 0.1 micron filter membranes. Hastelloy C-22 is a preferred nickel-based alloy for forming the porous metal support, while rutile is preferred as a starting material for forming the filter membrane. The resultant porous metal/metal oxide filter elements have superior resistance to chemical attack in high chloride, low pH environments.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: August 13, 2002
    Assignee: Graver Technologies, Inc.
    Inventor: James A. Gill
  • Method to prevent gas intrusion into wellbores during setting of cements
    Patent number: 5020594
    Abstract: A method of cementing wells to minimize gas intrusion by applying pressures on the subsurface formations substantially equal to the natural formation pressures.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: June 4, 1991
    Assignee: Sans. Gas. Inc.
    Inventor: James A. Gill