Patents by Inventor Barry W. McQuillan

Barry W. McQuillan 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).

  • Manufacture of high purity superconducting ceramic
    Patent number: 5135907
    Abstract: A method for the manufacture of superconducting polycrystalline ceramic materials by the decomposition of a mixture of isopropoxides.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: August 4, 1992
    Assignee: General Atomics
    Inventors: Khodabakhsh S. Mazdiyasni, Debra J. Treacy, Barry W. McQuillan, Frederick H. Elsner
  • Preparation of metal oxide fibers from intercalated graphite fibers
    Patent number: 4885120
    Abstract: Ceramic metal oxide fibers are made by intercalating graphitic graphite fibers with a mixture of metal chlorides and then heating the intercalated fibers to oxidize or burn off the carbon leaving a metal oxide fiber having generally the shape and structure of the graphite fiber precursors to make composite fibers, such as binary fibers of aluminum oxide-zirconium oxide and aluminum oxide-ferric oxide.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: December 5, 1989
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Barry W. McQuillan, George H. Reynolds
  • Water-splitting cycle with graphite intercalation compounds
    Patent number: 4663144
    Abstract: Water is decomposed to molecular hydrogen and molecular oxygen in a thermochemical cycle which comprises (i) reacting Cl.sub.2, Br.sub.2 or BrCl with water to obtain oxygen and hydrogen halide; (ii) forming a graphite intercalation compound with a hydrogen halide from step (i) and a metal halide selected from MBr.sub.i Cl.sub.3-i, wherein M is aluminum, gallium or indium and i is 0, 1, 2 or 3, and thereby obtaining hydrogen; (iii) decomposing by heating the graphite intercalation compound formed in step (ii); (iv) recycling the halogen produced in step (iii) for use in step (i); and (v) recycling the metal halide and graphite produced in step (iv) for use in step (ii).
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: May 5, 1987
    Assignee: GA Technologies Inc.
    Inventors: Barry W. McQuillan, John H. Norman
  • Process for making coatings on graphite using intercalated species
    Patent number: H641
    Abstract: Carbon-graphite fibers are coated with a protective metal oxide coating by intercalating the fibers with a metal chloride and then deintercalating the chlorine by hydrolysis to form a metal oxide over the fibers. An example using aluminum chloride to form an aluminum oxide coating is described.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: June 6, 1989
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Barry W. McQuillan, George H. Reynolds
  • Production of 10 micron diameter hollow ceramic fibers
    Patent number: H721
    Abstract: Hollow ceramic fibers are made by intercalating carbon fibers with a metal chloride and then heating the intercalated fibers in air to oxidize or burn off the carbon, leaving metal oxide fibers having generally the size and structure of the carbon fiber precursors. The fibers are then soaked in boric acid solution, briefly dried and heated at a high temperature to make hollow alumina fibers. The temperatures at which the boric acid soaked fibers are heated can be varied to produce different tube morphologies.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: January 2, 1990
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Barry W. McQuillan