Patents by Inventor Shashi Marikunte

Shashi Marikunte 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).

  • Extruded fiber reinforced cement matrix composites and method of making same
    Patent number: 6528151
    Abstract: An extruded fiber reinforced cement matrix composite having substantially improved tensile strength with strain hardening behavior and substantially improved tensile strain, and improved flexural properties in three-point bending is made by mixing cement, water, water soluble binder, and relatively short, discontinuous reinforcing fibers, preferably short polyvinyl alcohol fibers, to provide an extrudable mixture, the extruding the mixture to shape, and curing the cement.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: March 4, 2003
    Assignee: Northwestern University
    Inventors: Surendra P. Shah, Yixin Shao, Shashi Marikunte
  • Method of making extruded fiber reinforced cement matrix composites
    Patent number: 5891374
    Abstract: An extruded fiber reinforced cement matrix composite having substantially improved tensile strength with strain hardening behavior and substantially improved tensile strain, and improved flexural properties in three-point bending. The composite is made by mixing cement, water, water soluble binder, and relatively short, discontinuous reinforcing fibers, preferably short poly vinyl alcohol fibers, to provide an extrudable mixture; then extruding the mixture to shape, and curing the cement.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: April 6, 1999
    Assignee: Northwestern University
    Inventors: Surendra P. Shah, Yixin Shao, Shashi Marikunte