Patents by Inventor Arakalgud Venkatapathia Ramamurthy

Arakalgud Venkatapathia Ramamurthy 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).

  • Ultrasonic catalyst feed for fluid bed olefin polymerization
    Patent number: 6365695
    Abstract: Liquid catalyst composition is fed to a fluidized bed olefin polymerization reactor through an ultrasonic nozzle, enabling improved control over average catalyst composition droplet size and size distribution, which provides better control over resin particle size. The spray may be surrounded by a shroud of gas which creates a particle lean zone, thus reducing the likelihood of contact by the catalyst composition with existing product particles already suspended in the fluid bed.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: April 2, 2002
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Arakalgud Venkatapathia Ramamurthy, Clark Curtis Williams
  • Ultrasonic catalyst feed for fluid bed olefin polymerization
    Patent number: 6150478
    Abstract: Liquid catalyst composition is fed to a fluidized bed olefin polymerization reactor through an ultrasonic nozzle, enabling improved control over average catalyst composition droplet size and size distribution, which provides better control over resin particle size. The spray may be surrounded by a shroud of gas which creates a particle lean zone, thus reducing the likelihood of contact by the catalyst composition with existing product particles already suspended in the fluid bed.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: November 21, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Arakalgud Venkatapathia Ramamurthy, Clark Curtis Williams
  • Control of solution catalyst droplet size with an effervescent spray nozzle
    Patent number: 5962606
    Abstract: The present invention teaches the use of an effervescent nozzle to deliver liquid catalyst to a gas phase polymerization system.
    Type: Grant
    Filed: February 19, 1997
    Date of Patent: October 5, 1999
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Clark Curtis Williams, Mark Gregory Goode, Arakalgud Venkatapathia Ramamurthy