Patents by Inventor Zhihao Yang

Zhihao Yang 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).

  • MR signal-emitting coatings
    Patent number: 6361759
    Abstract: The present invention provides a coating that emits magnetic resonance signals and a method for coating medical devices therewith. The coating includes a paramagnetic metal ion-containing polymer complex that facilitates diagnostic and therapeutic techniques by readily visualizing medical devices coated with the complex.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: March 26, 2002
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Richard Frayne, Charles M. Strother, Orhan Unal, Zhihao Yang, Abukar Wehelie, Hyuk Yu
  • Coating of printhead nozzle plate
    Patent number: 6345881
    Abstract: A method for treating a metallic oxide or metallic nitride ink jet printhead nozzle plate comprising stamping the front surface thereof with an anti-wetting agent using an elastomeric stamp.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: February 12, 2002
    Assignee: Eastman Kodak Company
    Inventors: Zhihao Yang, Yung-Rai Lee, Thomas L. Penner, Ravi Sharma
  • Nozzle plate with mixed self-assembled monolayer
    Patent number: 6325490
    Abstract: An ink jet nozzle plate is provided comprising an outer surface having a self-assembled monolayer thereon comprising a mixture of at least one hydrophobic compound and at least one ionic compound, which monolayer renders the outer surface non-wetting with respect to aqueous ink solutions. In accordance with preferred embodiments, the self-assembled monolayers comprises a mixture of hydrophobic alkyl thiols and charged alkyl thiols. An advantage of coatings in accordance with the invention is that they provide improved non-wetting characteristics after contact with ink.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: December 4, 2001
    Assignee: Eastman Kodak Company
    Inventors: Zhihao Yang, Thomas L. Penner, Ravi Sharma
  • Method for replenishing coatings on printhead nozzle plate
    Patent number: 6296344
    Abstract: A method for replenishing fouled coatings on a nozzle plate for an ink jet printhead, the nozzle plate comprising the following layers in the order recited: i) a first monomolecular layer of an organic material having first and second functional groups, the first functional group of the first monomolecular layer being bound to the surface of the nozzle plate, and the second functional group of the first monomolecular layer being bound to a second monomolecular layer, and ii) the second monomolecular layer of an organic material having first and second functional groups, the first functional group of the second monomolecular layer being bound to the second functional group of the first monomolecular layer, and the second functional group of the second monomolecular layer being an anti-wetting group, the second monomolecular layer having been fouled; the method comprising A) unbinding the first functional group of the fouled second monomolecular layer so that it is no longer bound to the second functional group
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: October 2, 2001
    Assignee: Eastman Kodak Company
    Inventors: Ravi Sharma, Zhihao Yang, Thomas L. Penner