Patents by Inventor Rajat Chakravarty

Rajat Chakravarty 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).

  • Shaped monofilament coil seam and fabrics
    Patent number: 4862926
    Abstract: A spiral seam construction for lower caliper, multi-layer papermaking fabrics. The spiral seam members have a plurality of headcurves which are interconnected by a plurality of winding legs. Each of the winding legs has a cross-section in which the vertical dimension is less than the horizontal dimension, whereby it is possible to use a larger seaming pintle without an associated increase in seam caliper. The winding legs determine the maximum caliper of the seam, and the seam does not exceed the final fabric caliper.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: September 5, 1989
    Assignee: Asten Group, Inc.
    Inventors: Denis Barrette, Rajat Chakravarty, Andre' Loiselle