Patents by Inventor Kumar Parthasarathy

Kumar Parthasarathy 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).

  • Multiple-effect vapor chamber distillation system and methods of use
    Patent number: 10702794
    Abstract: A distillation system having a plurality of chambers, an input conduit connected to each chamber to deliver an aqueous fluid to each chamber; a pressure reducing valve connected to the input conduit; a waste output conduit connected to a waste collection compartment of each chamber; and condensate output conduit connected to a condensate collection compartment of each chamber. An evaporation wall of each chamber is constructed to maintain an evaporation surface temperature that is greater than a condensation surface temperature of a condensation wall of each chamber. The aqueous fluid forms a fluid coating, which moves down the evaporation wall. A saturation pressure differential is created as water from the aqueous fluid evaporates from the evaporation wall and condenses on the condensation wall forming an aqueous condensate, which moves down the condensation wall and is collected as an aqueous distillate in the condensate collecting compartment.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: July 7, 2020
    Assignee: The Board of Regents of the University of Oklahoma
    Inventors: Hamidreza Shabgard, Kumar Parthasarathy
  • Multiple-Effect Vapor Chamber Distillation System and Methods of Use
    Publication number: 20190126164
    Abstract: A distillation system having a plurality of chambers, an input conduit connected to each chamber to deliver an aqueous fluid to each chamber; a pressure reducing valve connected to the input conduit; a waste output conduit connected to a waste collection compartment of each chamber; and condensate output conduit connected to a condensate collection compartment of each chamber. An evaporation wall of each chamber is constructed to maintain an evaporation surface temperature that is greater than a condensation surface temperature of a condensation wall of each chamber. The aqueous fluid forms a fluid coating, which moves down the evaporation wall. A saturation pressure differential is created as water from the aqueous fluid evaporates from the evaporation wall and condenses on the condensation wall forming an aqueous condensate, which moves down the condensation wall and is collected as an aqueous distillate in the condensate collecting compartment.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Inventors: Hamidreza Shabgard, Kumar Parthasarathy
  • Method for testing analog and mixed-signal circuits using functionally related excitations and functionally related measurements
    Patent number: 7129734
    Abstract: A method for testing a circuit includes determining at least one performance characteristic of the circuit based on a functional relationship between excitation signals or on a functional relationship between measurement devices. The method is implemented either as a part of a built-in self test circuit of an integrated circuit or for production testing.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: October 31, 2006
    Assignees: Iowa State University Research Foundation, Inc., Texas Instruments, Inc.
    Inventors: Randall Geiger, Kumar Parthasarathy, Degang Chen, Le Jin, Turker Kuyel
  • Method for testing analog and mixed-signal circuits using functionally related excitations and functionally related measurements
    Publication number: 20050088164
    Abstract: A method for testing a circuit includes determining at least one performance characteristic of the circuit based on a functional relationship between excitation signals or on a functional relationship between measurement devices. The method is implemented either as a part of a built-in self test circuit of an integrated circuit or for production testing.
    Type: Application
    Filed: May 21, 2004
    Publication date: April 28, 2005
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Randall Geiger, Kumar Parthasarathy, Degang Chen, Le Jin, Turker Kuyel