Patents by Inventor Vijaykumar Hanagandi

Vijaykumar Hanagandi 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).

  • Rheological measurement process
    Patent number: 6691561
    Abstract: A method and apparatus for measuring the rheological properties of a polymer melt includes flowing the polymer melt from a first reactor to a device through a conduit at a predetermined flow rate, measuring a first pressure of the polymer melt at a first location in the conduit, measuring a second pressure at a second location downstream from the first location, measuring a temperature at a third location in the conduit, wherein the third location is between the first location and the second location, and calculating the rheological property of the polymer melt as it flows through the conduit. The method and apparatus do not require diversion of the polymer melt from the main process stream.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: February 17, 2004
    Assignee: Gerneral Electric Company
    Inventors: Ye-Gang Lin, Vijaykumar Hanagandi, Ana Isabel Diaz Calderon, Rafael Hierro Martin
  • RHEOLOGICAL MEASUREMENT PROCESS
    Publication number: 20030192367
    Abstract: A method and apparatus for measuring the rheological properties of a polymer melt includes flowing the polymer melt from a first reactor to a device through a conduit at a predetermined flow rate, measuring a first pressure of the polymer melt at a first location in the conduit, measuring a second pressure at a second location downstream from the first location, measuring a temperature at a third location in the conduit, wherein the third location is between the first location and the second location, and calculating the Theological property of the polymer melt as it flows through the conduit. The method and apparatus do not require diversion of the polymer melt from the main process stream.
    Type: Application
    Filed: April 15, 2002
    Publication date: October 16, 2003
    Inventors: Ye-Gang Lin, Vijaykumar Hanagandi, Ana Isabel Diaz Calderon, Rafael Hierro Martin
  • Redistributed polycarbonate resin
    Patent number: 6492485
    Abstract: The application relates to methods for producing a polycarbonate resin having a narrowed molecular weight distribution, specifically, the application relates to the use of a redistribution catalyst and a feedback loop control mechanism to prepare narrow molecular weight distribution resin.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: December 10, 2002
    Assignee: General Electric Company
    Inventors: Eric Thomas Gohr, Chad David Mistele, Michael F. Shannon, Vijaykumar Hanagandi, Devesh Mathur, Patrick Joseph McCloskey