Patents by Inventor Chuanlun Zhang

Chuanlun Zhang 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).

  • Mixed oxide nanoparticles and apparatus for making same
    Publication number: 20020187889
    Abstract: An apparatus for producing mixed oxide nanoparticles uses thermophilic bacteria cultured with suitable reducible metals in the presence of an electron donor to reduce at least one metal to form mixed oxide nanoparticles. The mixed oxide nanoparticles can have a magnetism greater than magnetite, such as a line width (&Dgr;H) of at least 2,200 Gauss. The magnetic nanoparticles can be used to form improved magnetorheological media, magnetic storage, dry printing and magnetic devices.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 12, 2002
    Inventors: Robert J. Lauf, Tommy J. Phelps, Chuanlun Zhang, Yul Roh
  • Mixed oxide nanoparticles and method of making
    Patent number: 6444453
    Abstract: Methods and apparatus for producing mixed oxide nanoparticulates are disclosed. Selected thermophilic bacteria cultured with suitable reducible metals in the presence of an electron donor may be cultured under conditions that reduce at least one metal to form a doped crystal or mixed oxide composition. The bacteria will form nanoparticles outside the cell, allowing easy recovery. Selection of metals depends on the redox potentials of the reducing agents added to the culture. Typically hydrogen or glucose are used as electron donors.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: September 3, 2002
    Assignee: Ut-Battelle, LLC
    Inventors: Robert J. Lauf, Tommy J. Phelps, Chuanlun Zhang, Yul Roh