Patents by Inventor Chitrangad

Chitrangad 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).

  • Aramid ballistic structure
    Patent number: 6030683
    Abstract: An aramid ballistic protection construction is disclosed with a combination of woven para-aramid fiber sheets and compressed pulp sheets. The construction exhibits improved wearer comfort and increased flexibility, with a level of ballistics protection nearly equal to that provided by an equivalent areal density of woven sheets, alone.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: February 29, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Chitrangad
  • Ballistic structure
    Patent number: 5275873
    Abstract: An improved ballistic structure is disclosed wherein aramid filaments of the structure are maintained under tension.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: January 4, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Chitrangad
  • Fluorinated finishes for aramids
    Patent number: 5266076
    Abstract: A method for modifying the surface properties of aramids by coating aramid fibers with certain fluorinated compounds containing polar nitrogen groups. Also disclosed are the fibers and fabrics produced by this process, and their use in ballistic applications.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: November 30, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Chitrangad, Jose M. Rodriguez-Parada
  • Hybrid ballistic fabric
    Patent number: 5187003
    Abstract: A woven fabric for ballistic protection is disclosed wherein the fibers in the fill direction exhibit an elongation to break greater than the elongation to break of the fibers in the warp direction.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: February 16, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Chitrangad