Patents by Inventor John H. Aikens

John H. Aikens 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).

  • Patent number: 6416818
    Abstract: A process produces a substantially stable aqueous dispersion of metal or metal oxide particles suitable for use in forming a transparent conductive coating. The process comprises the steps of (a) adding a nanocrystalline material to water, the nanocrystalline material comprising primary particles of metal or metal oxide having a substantially spherical shape and (b) mixing the nanocrystalline material and water to form an aqueous dispersion. The process identified above, prepares a substantially stable aqueous dispersion of nanocrystalline particles, which may be used in forming a transparent conductive coating.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: July 9, 2002
    Assignee: Nanophase Technologies Corporation
    Inventors: John H. Aikens, Harry W. Sarkas, Richard W. Brotzman, Jr., Sara Helvoigt
  • Patent number: 6033781
    Abstract: A coated ceramic powder comprises a plurality of ceramic particles and a siloxane star-graft coating polymer encapsulating at least a portion of the particles. The coating polymer comprises Si(w,x,y,z), where w, x, y and z are the mole percent tetrafunctional, trifunctional, difunctional and monofunctional monomeric units, respectively, and wherein w is about 20-100 and x, y and z are about 0-30, 0-50 and 0-10, respectively, and at least one of x, y and z is greater than zero.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: March 7, 2000
    Assignee: Nanophase Technologies Corporation
    Inventors: Richard W. Brotzman, Jr., John H. Aikens
  • Patent number: 5993967
    Abstract: A coated ceramic powder comprises a plurality of ceramic particles and a siloxane star-graft coating polymer encapsulating at least a portion of the particles. The coating polymer comprises Si(w,x,y,z), where w, x, y and z are the mole percent tetrafunctional, trifunctional, difunctional and monofunctional monomeric units, respectively, and wherein w, x, y and z are about 45-75, 5-25, 5-45 and 5-10, respectively.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: November 30, 1999
    Assignee: Nanophase Technologies Corporation
    Inventors: Richard W. Brotzman, Jr., John H. Aikens