Patents by Inventor Ranjani Sirdeshmukh

Ranjani Sirdeshmukh 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: 8852408
    Abstract: An electrochemical cell apparatus is disclosed where the cell has a chamber for containing an electrolyte. The chamber is situated between a bottom and a top substrate. One or more bottom windows are in the bottom substrate and one or more top windows are in the top substrate. Each window has a window cover facing the chamber. The top window and bottom window each have a portion in alignment so that an electron beam passes through both respective portions. A spacer is deposited between the top and bottom substrate and forming walls surrounding the chamber. Two or more electrodes, each having an interior portion that is within the chamber and electrically continuous with an exterior portion external to the chamber, are located on the chamber side of the bottom substrate.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: October 7, 2014
    Assignee: International Business Machines Corporation
    Inventors: S. Jay Chey, Mark den Heijer, Aparna Prabhakar, Frances M. Ross, Ranjani Sirdeshmukh
  • Publication number: 20100276277
    Abstract: An electrochemical cell apparatus is disclosed where the cell has a chamber for containing an electrolyte. The chamber is situated between a bottom and a top substrate. One or more bottom windows are in the bottom substrate and one or more top windows are in the top substrate. Each window has a window cover facing the chamber. The top window and bottom window each have a portion in alignment so that an electron beam passes through both respective portions. A spacer is deposited between the top and bottom substrate and forming walls surrounding the chamber. Two or more electrodes, each having an interior portion that is within the chamber and electrically continuous with an exterior portion external to the chamber, are located on the chamber side of the bottom substrate.
    Type: Application
    Filed: April 29, 2009
    Publication date: November 4, 2010
    Inventors: S. Jay Chey, Mark den Heijer, Aparna Prabhakar, Frances M. Ross, Ranjani Sirdeshmukh
  • Patent number: 7675466
    Abstract: Improved feed line networks for antenna arrays operating at millimeter wave frequencies are provided for constructing planar antenna arrays printed on the surface of a dielectric substrate. A planar antenna array includes an array of planar radiator elements interconnected through a feed line network of planar coplanar transmission lines that enable high-efficiency operation, at millimeter wave operating frequencies. For example, a feed network may be formed with a network of coplanar strip line transmission lines including one or more coplanar strip line (CPS) and one or more coplanar waveguide (CPW) transmission line, which are interconnected using balun structures, to enable high efficiency operation at millimeter wave frequencies.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: March 9, 2010
    Assignee: International Business Machines Corporation
    Inventors: Brian Paul Gaucher, Duixian Liu, Ranjani Sirdeshmukh
  • Publication number: 20090009399
    Abstract: Improved feed line networks for antenna arrays operating at millimeter wave frequencies are provided for constructing planar antenna arrays printed on the surface of a dielectric substrate. A planar antenna array includes an array of planar radiator elements interconnected through a feed line network of planar coplanar transmission lines that enable high-efficiency operation, at millimeter wave operating frequencies. For example, a feed network may be formed with a network of coplanar strip line transmission lines including one or more coplanar strip line (CPS) and one or more coplanar waveguide (CPW) transmission line, which are interconnected using balun structures, to enable high efficiency operation at millimeter wave frequencies.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 8, 2009
    Inventors: Brian Paul Gaucher, Duixian Liu, Ranjani Sirdeshmukh