Patents by Inventor Paranthaman Janagan

Paranthaman Janagan 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).

  • PLUG VALVE WITH FLOW AREA EQUAL TO OR GREATER THAN THE FLOW AREA OF THE CONNECTED PIPING
    Publication number: 20100301251
    Abstract: An apparatus is provided that in some embodiments provide an improved plug valve having a plug with a curved cylindrical sealing surface and a substantially flat second surface. An inlet region of the housing has a constant cross-sectional flow area.
    Type: Application
    Filed: August 9, 2010
    Publication date: December 2, 2010
    Applicant: DeZURIK, Inc.
    Inventors: Albert W. Libke, Paranthaman Janagan
  • Plug valve with flow area equal to or greater than the flow area of the connected piping
    Patent number: 7770867
    Abstract: A plug valve having an entry region, a chamber, and an outlet region, each with a flow area that is equal to or greater than the flow area of, for example, a standard wall ANSI B 36.10 (M) pipe connected to the inlet and outlet flanges of the valve. The valve's plug has a cylindrical front sealing face and a planar rear face. The axis of the sealing face is parallel to, but off-set from the axis of the plug. When the valve is fully open the planar rear face allows unimpeded flow through the chamber and substantially reduces friction to the flow. The valve's seat is cylindrical for mating with the cylindrical front sealing face of the plug. The seat has a rectangular outline shape.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: August 10, 2010
    Assignee: DeZURIK, Inc.
    Inventors: Albert W. Libke, Paranthaman Janagan
  • Plug valve with improved flow capacity
    Publication number: 20060108557
    Abstract: An apparatus is provided that in some embodiments provide an improved plug valve having a plug with a curved cylindrical sealing surface and a substantially flat second surface. An inlet region of the housing has a constant cross-sectional flow area.
    Type: Application
    Filed: November 22, 2004
    Publication date: May 25, 2006
    Inventors: Albert Libke, Paranthaman Janagan