Patents by Inventor William M. Chien

William M. Chien 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: 7985802
    Abstract: Provided are fabrics, components thereof, and methods for making the same. Woven and nonwoven fabrics are composed of fibers composed of a polyolefin composition. The polyolefin composition is composed of a propylene polymer and up to about 50 wt. %, based on the weight of the fiber, of a hydrocarbon resin. Fibers prepared from polyolefin compositions exhibit favorable elongation properties. Such fibers exhibit advantageous processing and enhanced levels of softness, durability, and elasticity, even at high spinning speeds required for preparing fine fibers.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: July 26, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: William M. Chien, William M. Ferry, Chia Y. Cheng
  • Publication number: 20090264846
    Abstract: Provided are fabrics, components thereof, and methods for making the same. Woven and nonwoven fabrics are composed of fibers composed of a polyolefin composition. The polyolefin composition is composed of a propylene polymer and up to about 50 wt. %, based on the weight of the fiber, of a hydrocarbon resin. Fibers prepared from polyolefin compositions exhibit favorable elongation properties. Such fibers exhibit advantageous processing and enhanced levels of softness, durability, and elasticity, even at high spinning speeds required for preparing fine fibers.
    Type: Application
    Filed: April 18, 2008
    Publication date: October 22, 2009
    Inventors: William M. Chien, William M. Ferry, Chia Y. Cheng
  • Patent number: 7550400
    Abstract: Multiple layer structures incorporating at least one polymeric film layer and at least one nonwoven fabric layer and products produced from such structures are provided. The polymeric film layer includes at least one tackifier resin. The at least one tackifier resin may be selected from a variety of resins including synthetic and natural resins. In certain embodiments, the at least one tackifier resin may be present at a concentration of about 0.1 wt. % to about 50 wt. % of the polymeric layer. The polymeric film layer may include one or more polymeric components selected from a variety of polymeric materials. Exemplary polymeric materials include polyethylene and ethylene vinyl acetate although as discussed hereinafter, a wide range of polymeric joined with a nonwoven fabric. The multiple layer structures may include additional layers made from a variety of materials. The structures exhibit beneficial peel strength properties between the polymeric layer and the nonwoven fabric layer.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: June 23, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: William M. Chien, Chia Y. Cheng
  • Publication number: 20040152591
    Abstract: Free-radical-initiated copolymerization of metallocene complexes containing olefinic substituents on aryl groups with styrene results in polymerized late transition metal catalysts that can be used for olefin polymerization or oligomerization. These catalysts have high catalyst activity for olefin polymerization or oligomerization.
    Type: Application
    Filed: October 24, 2003
    Publication date: August 5, 2004
    Inventors: Guo-Xin Jin, William M. Chien, Zerong Lin, Robert J. Wittenbrink, Guangyuan Zhou
  • Patent number: 5518973
    Abstract: A TiCl.sub.3 catalyst system is disclosed employing the electron donor, dicyclopentyldimethoxysilane ("DCPMS"). Additionally disclosed is a process for polymerizing olefins in the presence of a catalyst system employing a titanium trichloride catalyst, an alkylaluminum cocatalyst, and dicyclopentyldimethoxysilane is provided. The polymerization process comprises providing a prepolymerized titanium trichloride catalyst, and polymerizing an .alpha.-olefin in the presence of the prepolymerized catalyst, a trialkylaluminum co-catalyst and dicyclopentyldimethoxysilane. The catalyst system of the invention provides increased catalyst activity for a TiCl.sub.3 catalyst and a very broad polymer molecular weight distribution.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: May 21, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Nemesio D. Miro, William M. Chien