Patents by Inventor Hien Pham

Hien Pham 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: 20120212742
    Abstract: An optical parameter measuring apparatus for measuring optical parameters of an object includes a light source, a polarizing module, a Stokes polarimeter and a calculating module. The light source emits a light which is polarized by the polarizing module and received by the Stokes polarimeter. According to the light information generated by the Stokes polarimeter, Mueller matrixes of linear birefringence, circular birefringence, linear dichroism, circular dichroism and linear/circular depolarization of the object, and Stokes vector established according to the Mueller matrixes, the calculating module calculates the optical parameters.
    Type: Application
    Filed: December 28, 2011
    Publication date: August 23, 2012
    Applicant: National Cheng Kung University
    Inventors: Yu-Lung Lo, Thi-Thu-Hien Pham
  • Patent number: 7879304
    Abstract: The present invention provides for evaporation induced self-assembly (EISA) within microdroplets produced by a vibrating orifice aerosol generator (VOAG) for the production of monodisperse mesoporous silica particles. The process of the present invention exploits the concentration of evaporating droplets to induce the organization of various amphiphilic molecules, effectively partitioning a silica precursor to the hydrophilic regions of the structure. Promotion of silica condensation, followed by removal of the surfactant, provides ordered spherical mesoporous particles.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: February 1, 2011
    Assignee: STC. UNM
    Inventors: Timothy L Ward, Jaime Bravo, Abhaya Datye, Gabriel Lopez, Hien Pham, Shailendra Rathod, Venkata Goparaju
  • Publication number: 20030196258
    Abstract: The automatic toilet bowl overflow prevention apparatus comprises of a water level sensor attaches to the rim of the toilet bowl, a hollow flexible tube connecting the water level sensor to an air vented toilet tank flapper. When the water level sensor trips, it opens an air valve and allows air to vent out from the air vented toilet tank flapper. Venting the air out of the air vented toilet tank flapper will close the toilet tank flush valve. Thus shutting off water to the toilet bowl and prevents it from overflowing. This apparatus uses an air vented toilet tank flapper for demonstration. An air vented toilet tank ball will work too. This invention is totally automatic and does not require any electrical power to operate.
    Type: Application
    Filed: April 22, 2002
    Publication date: October 23, 2003
    Inventors: James Dieu Pham, Peter Hien Pham