Patents by Inventor Zongtao Zhang

Zongtao 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).

  • Publication number: 20050074600
    Abstract: Thick film magnetic/insulating nanocomposite materials, with significantly reduced core loss, and their manufacture are described. The insulator coated magnetic nanocomposite comprises one or more magnetic components, and an insulating component. The magnetic component comprises nanometer scale particles (about 1 to about 100 nanometers) coated by a thin-layered insulating phase. While the intergrain interaction between the immediate neighboring magnetic nanoparticles separated by the insulating phase provides the desired soft magnetic properties, the insulating material provides high resistivity, which reduces eddy current loss.
    Type: Application
    Filed: May 14, 2004
    Publication date: April 7, 2005
    Inventors: Xinqing Ma, Yide Zhang, Shihui Ge, Zongtao Zhang, Dajing Yan, Danny Xiao
  • Publication number: 20040265208
    Abstract: Methods for the production of monometal carbides are disclosed. A metal source and a carbon source are reacted under conditions suitable to produce a reaction product. The reaction product may comprise fully carburized monometal carbide and excess carbon, or an intermediate product comprising partially carburized monometal carbide in the presence or absence of excess carbon. The carbon content in the reaction product may then be adjusted in a controlled removal or addition process to produce a product the fully carburized monometal carbide having near stoichiometric carbon.
    Type: Application
    Filed: April 23, 2004
    Publication date: December 30, 2004
    Inventors: Zongtao Zhang, Meidong Wang, Danny Xiao
  • Publication number: 20030099762
    Abstract: A multi-layer coating is particularly useful for the coating of implants such as orthopedic and dental implants, particularly metallic implants. The first layer comprises a bond coating of a dense material insoluble and inert in body fluids. The second layer comprises apatite and a binder. The first layer protects the metallic implants from corrosion, apatite dissolution, and interfacial reaction with apatite and the binder. The apatite in the second layer is a bioactive agent that can osteobond to tissue. The binder allows adjustment of the thermal expansion coefficient between the coating and the metallic substrate. This multi-layer coating has both high bond strength to implants and excellent bioactivity with the surrounding body tissue.
    Type: Application
    Filed: October 14, 2002
    Publication date: May 29, 2003
    Inventors: Zongtao Zhang, Tongsan D. Xiao