Patents by Inventor Jing Chung Chang

Jing Chung Chang 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 for high-speed spinning of bicomponent fibers
    Patent number: 7011885
    Abstract: Highly crimped, fully drawn bicomponent fibers, prepared by melt-spinning, followed by gas-flow quenching, heat treatment and high speed windup, are provided, as are fine-decitex and highly uniform polyester bicomponent fibers.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: March 14, 2006
    Assignee: INVISTA North America S.à.r.l.
    Inventors: Jing Chung Chang, Joseph V. Kurian, Young D. Nguyen, James E. Van Trump, George Vassilatos
  • Method for high-speed spinning of bicomponent fibers
    Patent number: 6841245
    Abstract: Highly crimped, fully drawn bicomponent fibers, prepared by melt-spinning, followed by gas-flow quenching, heat treatment and high speed windup, are provided, as are fine-decitex and highly uniform polyester bicomponent fibers.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: January 11, 2005
    Assignee: Invista North America S.A.R.L.
    Inventors: Jing Chung Chang, Joseph V. Kurian, Young D. Nguyen, James E. Van Trump, George Vassilatos
  • Method for high-speed spinning of bicomponent fibers
    Publication number: 20040191513
    Abstract: Highly crimped, fully drawn bicomponent fibers, prepared by melt-spinning, followed by gas-flow quenching, heat treatment and high speed windup, are provided, as are fine-decitex and highly uniform polyester bicomponent fibers.
    Type: Application
    Filed: December 22, 2003
    Publication date: September 30, 2004
    Inventors: Jing Chung Chang, Joseph V. Kurian, Young D. Nguyen, James E. Van Trump, George Vassilatos
  • Shaped articles with improved stability
    Publication number: 20040121116
    Abstract: A shaped article comprising poly[(alkylene-co-dianhydrosugar ester) dicarboxylate] or poly(alkylene-co-dianhydro-dicarboxylate) having improved stability in the form of less change of Tg and reduced shrinkage upon storage at elevated temperature is disclosed.
    Type: Application
    Filed: June 10, 2003
    Publication date: June 24, 2004
    Inventors: Jing-Chung Chang, Joseph V. Kurian
  • Polyester bicomponent filament
    Publication number: 20040099984
    Abstract: The invention provides an improved method for making a poly(ester) bicomponent fiber wherein at least one poly(ester) contains a styrene polymer.
    Type: Application
    Filed: November 21, 2002
    Publication date: May 27, 2004
    Inventors: Jing-Chung Chang, Joseph V. Kurian, James E. Van Trump
  • Method for high-speed spinning of bicomponent fibers
    Patent number: 6692687
    Abstract: Highly crimped, fully drawn bicomponent fibers, prepared by melt-spinning, followed by gas-flow quenching, heat treatment and high speed windup, are provided, as are fine-decitex and highly uniform polyester bicomponent fibers.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: February 17, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jing Chung Chang, Joseph V. Kurian, Young D. Nguyen, James E. Van Trump, George Vassilatos
  • Method for high-speed spinning of bicomponent fibers
    Publication number: 20020025433
    Abstract: Highly crimped, fully drawn bicomponent fibers, prepared by melt-spinning, followed by gas-flow quenching, heat treatment and high speed windup, are provided, as are fine-decitex and highly uniform polyester bicomponent fibers.
    Type: Application
    Filed: January 11, 2001
    Publication date: February 28, 2002
    Inventors: Jing-Chung Chang, Joseph V. Kurian, Young D. Nguyen, James E. Van Trump, George Vassilatos
  • Low emission polymer compositions
    Patent number: 6331264
    Abstract: The invention comprises polymer compositions containing 3-hydroxypropanoxy terminated polymer that exhibit reduced levels of degradation product emissions during processing, by contacting the polymer in the molten state with a melt stable, organic nitrogen-containing stabilizing compound, such as polyamide.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: December 18, 2001
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Joseph Varapadavil Kurian, Jing Chung Chang