Patents by Inventor Pradeep K. Agarwal, deceased

Pradeep K. Agarwal, deceased 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).

  • Membrane for hydrogen recovery from streams containing hydrogen sulfide
    Patent number: 7163670
    Abstract: A membrane for hydrogen recovery from streams containing hydrogen sulfide is provided. The membrane comprises a substrate, a hydrogen permeable first membrane layer deposited on the substrate, and a second membrane layer deposited on the first layer. The second layer contains sulfides of transition metals and positioned on the on a feed side of the hydrogen sulfide stream. The present invention also includes a method for the direct decomposition of hydrogen sulfide to hydrogen and sulfur.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: January 16, 2007
    Inventors: John Ackerman, legal representative, Pradeep K. Agarwal, deceased
  • Device and method for the measurement of gas permeability through membranes
    Patent number: 7088106
    Abstract: A device for the measuring membrane permeability in electrical/electrochemical/photo-electrochemical fields is provided. The device is a permeation cell and a tube mounted within the cell. An electrode is mounted at one end of the tube. A membrane is mounted within the cell wherein a corona is discharged from the electrode in a general direction toward the membrane thereby generating heated hydrogen atoms adjacent the membrane. A method for measuring the effects of temperature and pressure on membrane permeability and selectivity is also provided.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: August 8, 2006
    Assignee: University of Wyoming
    Inventors: Rekha Agarwal, legal representative, John Ackerman, Ron Borgialli, Jerry Hamann, Suresh Muknahalliptna, Pradeep K. Agarwal, deceased
  • Apparatus and method for production of methanethiol
    Patent number: 6995288
    Abstract: A method for the production of methyl mercaptan is provided. The method comprises providing raw feed gases consisting of methane and hydrogen sulfide, introducing the raw feed gases into a non-thermal pulsed plasma corona reactor, and reacting the raw feed gases within the non-thermal pulsed plasma corona reactor with the reaction CH4+H2S?CH3SH+H2. An apparatus for the production of methyl mercaptan using a non-thermal pulsed plasma corona reactor is also provided.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: February 7, 2006
    Assignee: University of Wyoming
    Inventors: Rehka Agarwal, legal representative, Temi M. Linjewile, Ashley S. Hull, Zumao Chen, Pradeep K. Agarwal, deceased