Patents by Inventor Ganesh V. Rao

Ganesh V. Rao 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).

  • Extrusion apparatus and process
    Patent number: 6017477
    Abstract: Extrusion apparatus is employed in a co-extrusion process to produce a triangular-shaped barrel for a writing instrument. An inner layer of material is extruded in tubular form having a substantially circular cross-section. A coating layer of three strips of material, equally spaced one from the other, is co-extruded about the outer periphery of the inner layer. A combination of forces produced during the process is effective to distort the inner layer to form a product having a substantially triangular shape.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: January 25, 2000
    Assignee: The Gillette Company
    Inventors: Gary Lu, Ganesh V. Rao, Mingchih M. Tseng