Patents by Inventor Gulshan Chhabra

Gulshan Chhabra 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).

  • Nonwoven sorbent manhole apron
    Patent number: 6143394
    Abstract: There is disclosed the manufacture and use of nonwoven absorbent mats laminated with barrier film for manhole aprons. The absorbent aprons are used about manholes during routine maintenance of underground transformers, utility cables, etc. The nonwoven aprons are coated to prevent the absorbed liquid from leaching through. The mat is specially designed to absorb contaminated liquid very quickly. The nonwoven mat is made out of cotton shoddy fibers and/or a mixture of synthetic fibers and/or synthetic fibers only with film on one side. The mat has a 36-inch manhole opening in the center thereof. The mat is thin and lays flat to conform to the road. The thickness of the mat ranges from 0.075" to 0.25" in order to avoid any tripping hazard.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: November 7, 2000
    Assignee: KG Fibers, Inc.
    Inventors: Kirit H. Patel, Gulshan Chhabra
  • Layered acoustical insulating web
    Patent number: 5886306
    Abstract: An acoustical web for use with vehicles, farm equipment, airplanes and trains is disclosed. The web has a plurality of layers of cellulose bonded with a binder.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: March 23, 1999
    Assignee: KG Fibers, Inc.
    Inventors: Kirit Patel, Gulshan Chhabra