Patents by Inventor Leonie K. Walsh

Leonie K. Walsh 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).

  • Patent number: 6803014
    Abstract: The present invention relates to a method for making a heat-resistant elastic article and a heat-resistant elastic article. The invention especially relates to a method of making elastic fibers and polymeric elastic fibers wherein the elastic fibers are capable of withstanding dyeing and heat-setting processes that typically are conducted at elevated temperatures (such as 110-230° C. and especially at greater than or equal to 130° C. for minutes). The inventive method comprises radiation crosslinking an article (or plurality of articles) under an inert or oxygen limited atmosphere (for example, in N2, argon, helium, carbon dioxide, xenon and/or a vacuum) wherein the article (or articles) comprises at least one amine stabilizer and preferably another optional stabilizer additive. More preferably, the radiation crosslinking is performed at a low temperature (−50 to 40° C.).
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: October 12, 2004
    Assignee: Dow Global Technologies Inc.
    Inventors: Thoi H. Ho, Selim Bensason, Rajen M. Patel, Kimberly S. Houchens, Rona L. Reid, Pak-Wing S. Chum, Leonie K. Walsh
  • Patent number: 6777082
    Abstract: The present invention relates to a fiber produced form a composition comprising at least one hydrogenated block copolymer and, optionally, at least one other polymer selected from the group consisting of a reactive tailored liquid polyurethane, an elastomeric or sulfonated ethylene/vinyl aromatic interpolymer, an elastomeric ethylene/C3-C20 &agr;-olefin interpolymer, an C3-C20 &agr;-olefin/conjugated diene interpolymer, an elastic polypropylene polymer, an enhanced polypropylene polymer, an elastomeric thermoplastic polyurethane, an elastic copolyester, a partially hydrogenated block copolymer, an elastic polyamide, a hydroxyl functionalized polyether (or polyetheramine), a styrene/conjugated diene interpolymer, and an elastomeric metallocene-catalyzed synthetic polymer or a blend or formulated system thereof.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: August 17, 2004
    Assignee: The Dow Chemical Company
    Inventors: Rajen M. Patel, Pak-Wing S. Chum, Stephen F. Hahn, Leonie K. Walsh, Rexford A. Maugans, Selim Bensason, Thoi H. Ho, Calvin P. Esneault
  • Publication number: 20030060529
    Abstract: The present invention relates to a method for making a heat-resistant elastic article and a heat-resistant elastic article. The invention especially relates to a method of making elastic fibers and polymeric elastic fibers wherein the elastic fibers are capable of withstanding dyeing and heat-setting processes that typically are conducted at elevated temperatures (such as 110-230° C. and especially at greater than or equal to 130° C. for minutes). The inventive method comprises radiation crosslinking an article (or plurality of articles) under an inert or oxygen limited atmosphere (for example, in N2, argon, helium, carbon dioxide, xenon and/or a vacuum) wherein the article (or articles) comprises at least one amine stabilizer and preferably another optional stabilizer additive. More preferably, the radiation crosslinking is performed at a low temperature (−50 to 40° C.).
    Type: Application
    Filed: July 10, 2002
    Publication date: March 27, 2003
    Inventors: Thoi H. Ho, Selim Bensason, Rajen M. Patel, Kimberly S. Houchens, Rona L. Reid, Pak-Wing S. Chum, Leonie K. Walsh
  • Publication number: 20020147273
    Abstract: The present invention relates to a fiber produced form a composition comprising at least one hydrogenated block copolymer and, optionally, at least one other polymer selected from the group consisting of a reactive tailored liquid polyurethane, an elastomeric or sulfonated ethylene/vinyl aromatic interpolymer, an elastomeric ethylene/C3-C20 &agr;-olefin interpolymer, an C3-C20 &agr;-olefin/conjugated diene interpolymer, an elastic polypropylene polymer, an enhanced polypropylene polymer, an elastomeric thermoplastic polyurethane, an elastic copolyester, a partially hydrogenated block copolymer, an elastic polyamide, a hydroxyl functionalized polyether (or polyetheramine), a styrene/conjugated diene interpolymer, and an elastomeric metallocene-catalyzed synthetic polymer or a blend or formulated system thereof.
    Type: Application
    Filed: December 6, 2001
    Publication date: October 10, 2002
    Inventors: Rajen M. Patel, Pak-Wing S. Chum, Stephen F. Hahn, Leonie K. Walsh, Rexford A. Maugans, Selim Bensason, Thoi H. Ho, Calvin P. Esneault
  • Patent number: 6437014
    Abstract: The present invention relates to a method for making a heat-resistant elastic article and a heat-resistant elastic article. The invention especially relates to a method of making elastic fibers and polymeric elastic fibers wherein the elastic fibers are capable of withstanding dyeing and heat-setting processes that typically are conducted at elevated temperatures (such as 110-230° C. and especially at greater than or equal to 130° C. for minutes). The inventive method comprises radiation crosslinking an article (or plurality of articles) under an inert or oxygen limited atmosphere (for example, in N2, argon, helium, carbon dioxide, xenon and/or a vacuum) wherein the article (or articles) comprises at least one amine stabilizer and preferably another optional stabilizer additive. More preferably, the radiation crosslinking is performed at a low temperature (−50 to 40° C.).
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: August 20, 2002
    Assignee: The Dow Chemical Company
    Inventors: Thoi H. Ho, Selim Bensason, Rajen M. Patel, Kimberly S. Houchens, Rona L. Reid, Pak-Wing S. Chum, Leonie K. Walsh