Patents by Inventor Subhasish Roychoudhury

Subhasish Roychoudhury 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).

  • Publication number: 20020198691
    Abstract: Methods and systems for modeling arc behavior are described. In an exemplary embodiment, the method includes the steps of determining electrical conductivity distribution in an arc and determining a current density distribution of the arc based on the determined electrical conductivity.
    Type: Application
    Filed: June 19, 2001
    Publication date: December 26, 2002
    Inventor: Subhasish Roychoudhury
  • Patent number: 6421422
    Abstract: An X-ray tube assembly includes an anode, a cathode, and an X-ray transparent window. The anode includes an X-ray-producing target having a surface. The cathode has an electron-beam axis which intersects the target surface at a focal point and which is oriented at a first angle, with respect to the target surface, wherein the first angle is generally twenty degrees. The window includes a surface having a center point. A line between the focal and center points makes a second angle, with respect to the target surface, wherein the second angle is generally seven degrees. A method for producing X-rays employs these angles.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: July 16, 2002
    Assignee: General Electric Company
    Inventors: Eric Lifshin, Amy Linsebigler Smentkowski, William Guy Morris, Lembit Salasoo, Subhasish Roychoudhury
  • Patent number: 6377658
    Abstract: The present invention provides, in one embodiment, a bearing assembly consisting of a rotatable shaft and a stator coaxially aligned. The stator has at least one circumferential protrusion that contains respective segments that extend radially from the stator. Each of the respective segments contains at least one capture cavity and has a main cavity disposed between each of the respective segments so as to house a thermal shunt. A plurality of roller bearings are also disposed radially between the rotatable shaft and the stator. In addition, at least one viscoseal is disposed on the rotatable shaft.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: April 23, 2002
    Assignee: General Electric Company
    Inventors: Mark Ernest Vermilyea, Antonio Alberto Mogro-Campero, Subhasish Roychoudhury, Daniel John Noonan, Vivek Bhatt, Liangfeng Xu, Suryaprakash Ganti