Patents by Inventor D. Srivastava

D. Srivastava 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: 8219335
    Abstract: A method and system for obtaining the characteristic impedance of an electrical winding by measuring the input and output voltages and the currents within a winding across a low frequency range, and applying transmission line properties to model the winding. The characteristic impedance (Zc) is directly proportional to the capacitance of the winding, and is independent of external circuits. Thus any changes to Zc will reflect movements of the winding that would affect the capacitance. Because Zc has a smooth and robust monotonical relationship with frequency of the applied signal, the resulting curve is exponential in shape. A relative comparison between Zc curves will provide a clear indication of the overall axial or radial winding movements, or winding faults, which can be used to assess the overall health of the winding.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: July 10, 2012
    Inventors: Jose R. Marti, Krishan D. Srivastava, Qiaoshu Jiang
  • Publication number: 20080300807
    Abstract: A method and system for obtaining the characteristic impedance of an electrical winding by measuring the input and output voltages and the currents within a winding across a low frequency range, and applying transmission line properties to model the winding. The characteristic impedance (Zc) is directly proportional to the capacitance of the winding, and is independent of external circuits. Thus any changes to Zc will reflect movements of the winding that would affect the capacitance. Because Zc has a smooth and robust monotonical relationship with frequency of the applied signal, the resulting curve is exponential in shape. A relative comparison between Zc curves will provide a clear indication of the overall axial or radial winding movements, or winding faults, which can be used to assess the overall health of the winding.
    Type: Application
    Filed: March 23, 2005
    Publication date: December 4, 2008
    Applicant: THE UNIVERSITY OF BRITISH COLUMBIA
    Inventors: Jose R. Marti, Krishan D. Srivastava, Qiaoshu Jiang
  • Publication number: 20060009918
    Abstract: Disclosed is a method for enhancing the effect of a protein modulator on a protein by modifying the protein modulator so that the protein modulator binds with the surface of the protein, along with a method for modulating a protein's biological function by contacting the protein with such a modified protein modulator. Also described are modified protein modulators having the formula PM-SP-(LK)p-MCG-(M)q, where PM is a protein modulator which interacts with an active site or allosteric site of a protein; SP is a spacer; LK is a linker; p is 0 or 1; q is an integer greater than or equal to one; MCG is a metal chelating group; and M is a metal ion.
    Type: Application
    Filed: August 3, 2004
    Publication date: January 12, 2006
    Inventors: Sanku Mallik, Bidhan Roy, D. Srivastava