Patents by Inventor Bharat J. Gajjar

Bharat J. Gajjar 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).

  • Method of warp knitting
    Patent number: 4688403
    Abstract: A warp knitted fabric of elastomeric and nonelastomeric threads. The nonelastomeric threads are fed from a single warp in a pattern to the front bar while the elastomeric threads are divided into a plurality of sets from a single warp and fed to a plurality of guide bars in a pattern. The guide bars with the elastomeric threads are knit in a repeating stitch pattern having a combination of knit and laid-in stitches for each elastomeric thread.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: August 25, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Bharat J. Gajjar
  • Open warp knit fabric
    Patent number: 4649722
    Abstract: Open warp knit technology is applied to a fabric having nonelastomeric yarn on the front bar and elastomeric yarn on the back bar to reduce the number of pinch points between the yarns of the fabric and improve its recovery property. The nonelastomeric yarn is knit in an open stitch construction and the elastomeric yarn is knit in a closed stitch construction.
    Type: Grant
    Filed: March 26, 1986
    Date of Patent: March 17, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Bharat J. Gajjar
  • Layered warp knits
    Patent number: 4638648
    Abstract: Warp knit technology is applied to produce a multi-layered fabric using a four bar stitch construction with spandex yarn in the last guide bar with knit or laid in stitch.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: January 27, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Bharat J. Gajjar
  • Single-bar warp-knit fabrics
    Patent number: T100901
    Abstract: A single guide-bar, warp-knit crepe fabric is provided. The fabric has a repeating stitch pattern that includes at least two stitches selected from the group consisting of a three-needle open stitch, a two-needle open stitch and a one-needle open or closed stitch. The floats of the repeat pattern are no longer than four-needle spacings. Four-course repeating patterns are preferred, especially one having a 0-2, 2-3, 4-2, 2-1 repeat.
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: August 4, 1981
    Inventor: Bharat J. Gajjar