Patents by Inventor Portia D. Yarborough

Portia D. Yarborough 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).

  • Articles comprising aqueous dispersions of polyureaurethanes
    Patent number: 7771806
    Abstract: Stable aqueous poly(urea/urethane) polymers and dispersions are made that do not require the inclusion of chain extenders, curing agents or crosslinking agents. The disclosed poly(urea/urethane) dispersions can be used to make articles such as films and gloves with reduced chance of chemical and biological allergic reaction to skin, and which exhibit improved puncture and tear resistance when compared to such articles made with other materials.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: August 10, 2010
    Assignee: INVISTA North America S.a r.l.
    Inventors: Young H. Kim, Michael O'Neill, Jiazhong Chen, Portia D. Yarborough
  • Articles comprising aqueous dispersions of polyureaurethanes
    Patent number: 7435464
    Abstract: Polyurethane particles dispersed in water can be used to make articles of commerce with reduced chance of chemical and biological allergic reaction to skin, and which exhibit improved puncture and tear resistance when compared to gloves made with other materials.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: October 14, 2008
    Assignee: Invista North America S.A.R.L.
    Inventors: Young H. Kim, Michael O'Neill, Jiazhong Chen, Portia D. Yarborough
  • Cut resistant, wicking and thermoregulating fabric and articles made therefrom
    Patent number: 6874336
    Abstract: A knitted fabric, such as present in a glove, provides cut resistance, wicking of moisture and thermo regulating properties. The fabric is made with at least one bundle of at least one yarn wherein the yarn comprises at least two strands: at least one of the strands in the bundle having a sheath/core construction with a sheath of cut resistant staple fibers and a metal fiber core; and at least one of the strands in the bundle having cut resistant aramid fibers and being free from metal fibers.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: April 5, 2005
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Portia D. Yarborough, Heather Lyn Anne Johnstone, Gregory S. Parker, Larry John Prickett
  • Cut resistant, wicking and thermoregulating fabric and articles made therefrom
    Publication number: 20040261465
    Abstract: A knitted fabric, such as present in a glove, provides cut resistance, wicking of moisture and thermoregulating properties.
    Type: Application
    Filed: June 25, 2003
    Publication date: December 30, 2004
    Inventors: Portia D. Yarborough, Heather Lyn Anne Johnstone, Gregory S. Parker, Larry John Prickett
  • Articles comprising aqueous dispersions of polyureaurethanes
    Publication number: 20040219318
    Abstract: Polyurethane particles dispersed in water can be used to make articles of commerce with reduced chance of chemical and biological allergic reaction to skin, and which exhibit improved puncture and tear resistance when compared to gloves made with other materials.
    Type: Application
    Filed: February 17, 2004
    Publication date: November 4, 2004
    Inventors: Young H. Kim, Michael O'Neill, Jiazhong Chen, Portia D. Yarborough
  • Process for restoring the natural appearance of para-aramid clothing
    Patent number: 6669741
    Abstract: The visual appearance of undyed or unpigmented para-aramid fabric generally present in an article of clothing is restored by contacting the fabric with an aqueous dye solution or dispersion to dye the aramid fibrils present on the yarns. Use of a conventional washing machine is suitable in the fabric contact with the dye.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: December 30, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Portia D. Yarborough, Hamid Moayed Ghorashi
  • Process for restoring the natural appearance of para-aramid clothing
    Publication number: 20030088922
    Abstract: The visual appearance of undyed or unpigmented para-aramid fabric generally present in an article of clothing is restored by contacting the fabric with an aqueous dye solution or dispersion to dye the aramid fibrils present on the yarns. Use of a conventional washing machine is suitable in the fabric contact with the dye.
    Type: Application
    Filed: September 21, 2001
    Publication date: May 15, 2003
    Inventors: Portia D. Yarborough, Hamid Moayed Ghorashi