Patents by Inventor Dipak Gupta

Dipak Gupta 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).

  • Process for preparation of tooling of carbon fiber reinforced polyimide for composites manufacture
    Patent number: 4944824
    Abstract: Two-stage curing of composite tooling of carbon fiber reinforced polyimide of high Tg.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: July 31, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dipak Gupta
  • Radial tires containing polyamide monofilament
    Patent number: 4850412
    Abstract: A pneumatic radial tire, wherein each carcass ply contains a rubberized layer of load bearing polyamide monofilaments.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: July 25, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dipak Gupta
  • Composite tooling for composites manufacture
    Patent number: 4851280
    Abstract: Composite tooling of carbon fiber reinforced polyimide of high Tg is prepared by first curing in an autoclave followed by post-curing in an air circulating oven.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: July 25, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dipak Gupta