Patents by Inventor Lijuan PI

Lijuan PI 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).

  • Fusible bicomponent spandex
    Patent number: 11274381
    Abstract: Included are segmented polyurethane elastic fibers or spandex fibers, capable of bonding to polymer fiber such as nylon or polyamide fibers, in addition to bonding to itself, for apparel textile applications. More particularly the invention relates to bicomponent spandex fibers, with a heat resistant core and a heat sensitive sheath, spun from polymer solutions. The nylon fabrics containing such spandex fibers have enhanced stretch performance and improved surface appearance after heat treatment to activate the fusing and bonding between nylon fibers and spandex fibers.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 15, 2022
    Assignee: THE LYCRA COMPANY LLC
    Inventors: Hong Liu, Steven Wayne Smith, Achille Mayelle Bivigou Koumba, Geoffey Davis Hietpas, Willem Bakker, Andreas J. Blab, Tianyi Liao, Lijuan Pi
  • FUSIBLE BICOMPONENT SPANDEX
    Publication number: 20160122907
    Abstract: Included are segmented polyurethane elastic fibers or spandex fibers, capable of bonding to polymer fiber such as nylon or polyamide fibers, in addition to bonding to itself, for apparel textile applications. More particularly the invention relates to bicomponent spandex fibers, with a heat resistant core and a heat sensitive sheath, spun from polymer solutions. The nylon fabrics containing such spandex fibers have enhanced stretch performance and improved surface appearance after heat treatment to activate the fusing and bonding between nylon fibers and spandex fibers.
    Type: Application
    Filed: May 29, 2014
    Publication date: May 5, 2016
    Applicant: INVISTA North America S.a.r.I.
    Inventors: Hong LIU, Steven Wayne SMITH, Achille Mayelle BIVIGOU KOUMBA, Geoffey Davis HIETPAS, Willem BAKKER, Andreas J. BLAB, Tianyi LIAO, Lijuan PI