Patents by Inventor Day-Chyuan Lee

Day-Chyuan Lee 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: 10538682
    Abstract: Polymeric compositions comprising a blend of high-density polyethylene (“HDPE”) with ethylene vinyl acetate (“EVA”), and optionally with a carbon black and/or one or more other additives, where the polymeric compositions have certain melt-index and vinyl-acetate-content ranges to improve melt strength and processability. Such polymeric compositions can be employed in manufacturing coated conductors, such as fiber optic cables.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: January 21, 2020
    Assignee: Dow Global Technologies LLC
    Inventor: Day-Chyuan Lee
  • Publication number: 20190177567
    Abstract: Polymeric compositions comprising a blend of high-density polyethylene (“HDPE”) with ethylene vinyl acetate (“EVA”), and optionally with a carbon black and/or one or more other additives, where the polymeric compositions have certain melt-index and vinyl-acetate-content ranges to improve melt strength and processability. Such polymeric compositions can be employed in manufacturing coated conductors, such as fiber optic cables.
    Type: Application
    Filed: February 20, 2019
    Publication date: June 13, 2019
    Inventor: Day-Chyuan Lee
  • Patent number: 10246602
    Abstract: Polymeric compositions comprising a blend of high-density polyethylene (“HDPE”) with ethylene vinyl acetate (“EVA”), and optionally with a carbon black and/or one or more other additives, where the polymeric compositions have certain melt-index and vinyl-acetate-content ranges to improve melt strength and processability. Such polymeric compositions can be employed in manufacturing coated conductors, such as fiber optic cables.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: April 2, 2019
    Assignee: Union Carbide Chemicals & Plastics Technology LLC
    Inventor: Day-Chyuan Lee
  • Patent number: 10160844
    Abstract: A composition comprising a composition of an ethylene-based thermoplastic polymer comprising high density polyethylene (HDPE) blended with a modifier component, an optional blowing agent, optionally with carbon black and/or one or more additives, to make foamed articles.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: December 25, 2018
    Assignee: Dow Global Technologies LLC
    Inventor: Day-Chyuan Lee
  • Publication number: 20180010008
    Abstract: Polymeric compositions comprising a blend of high-density polyethylene (“HDPE”) with ethylene vinyl acetate (“EVA”), and optionally with a carbon black and/or one or more other additives, where the polymeric compositions have certain melt-index and vinyl-acetate-content ranges to improve melt strength and processability. Such polymeric compositions can be employed in manufacturing coated conductors, such as fiber optic cables.
    Type: Application
    Filed: February 3, 2016
    Publication date: January 11, 2018
    Inventor: Day-Chyuan Lee
  • Patent number: 9685255
    Abstract: A lead-free composition comprising: (A) Polyvinyl chloride (PVC); (B) Bioplasticizer; (C) Calcium Carbonate; and (D) Calcined clay; with the combined weight of the calcium carbonate and calcined clay in the composition in the range of 1 to 15 weight percent, and the weight ratio of calcium carbonate to calcined clay in the range of 15:85 to 85:15. In one embodiment the invention is an insulation sheath for a wire or cable made from the lead-free composition described in the preceding embodiment. In one embodiment the invention is a wire or cable comprising the insulation sheath of the preceding embodiment.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: June 20, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Day-Chyuan Lee, Bharat I. Chaudhary, Bret P. Neese
  • Publication number: 20160208077
    Abstract: Polymeric compositions comprising a vinyl chloride resin, a bioplasticizer, and antimony trioxide. The antimony trioxide comprises arsenic in an amount of 300 ppm or less, lead in an amount of 410 ppm or less, and iron in an amount of 10 ppm or less, based on the entire weight of the antimony trioxide. Such polymeric compositions can be employed in a variety of articles of manufacture, such as coatings for wires and cables.
    Type: Application
    Filed: September 25, 2014
    Publication date: July 21, 2016
    Inventors: Bret P. Neese, Bharat I. Chaudhary, Norman M. Chin, Day-Chyuan Lee
  • Publication number: 20150371729
    Abstract: A lead-free composition comprising: (A) Polyvinyl chloride (PVC); (B) Bioplasticizer; (C) Calcium Carbonate; and (D) Calcined clay; with the combined weight of the calcium carbonate and calcined clay in the composition in the range of 1 to 15 weight percent, and the weight ratio of calcium carbonate to calcined clay in the range of 15:85 to 85:15. In one embodiment the invention is an insulation sheath for a wire or cable made from the lead-free composition described in the preceding embodiment. In one embodiment the invention is a wire or cable comprising the insulation sheath of the preceding embodiment.
    Type: Application
    Filed: February 25, 2014
    Publication date: December 24, 2015
    Inventors: Day-Chyuan Lee, Bharat I. Chaudhary, Bret P. Neese
  • Publication number: 20150315401
    Abstract: A composition comprising a blend of an ethylene-based thermoplastic polymer comprising high density polyethylene (HDPE) blended with a modifier component, and optionally with a carbon black and/or one or more additives to provide reduced shrinkage of the extruded composition and components made from the composition.
    Type: Application
    Filed: December 4, 2013
    Publication date: November 5, 2015
    Inventor: Day-chyuan Lee
  • Publication number: 20150307679
    Abstract: A composition comprising a composition of an ethylene-based thermoplastic polymer comprising high density polyethylene (HDPE) blended with a modifier component, an optional blowing agent, optionally with carbon black and/or one or more additives, to make foamed articles.
    Type: Application
    Filed: December 2, 2013
    Publication date: October 29, 2015
    Inventor: Day-Chyuan Lee
  • Patent number: 6281316
    Abstract: A polymer of the invention comprising the comonomers ethylene, one or more alpha-olefins having 3 to 20 carbon atoms, and one or more cyclic dienes having up to 30 carbon atoms, said polymer having a density of at least 0.890 gram per cubic centimeter; long chain branching; a plurality of double bonds; an Mw/Mn ratio ratio (PDI) of at least 2.5; a flow activation energy of greater than about 6.5 kcal/mol; and a Relaxation Spectrum Index (RSI), PDI, and Melt Index (MI), such that RSI·MIa>2.7 and RSI·MIa·PDIb is in the range of about 0.8 to about 60, when a and b are about 0.6 and minus 1.2, respectively.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: August 28, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Scott Hanley Wasserman, James LaMonte Adams, Tong Chen, George Norris Foster, Laurence Herbert Gross, Day-Chyuan Lee, Walter Thomas Reichle, Robert Harold Vogel
  • Patent number: 6159617
    Abstract: Ethylene polymers having a) a Polydispersity Index of about 2 to about 4; b) a melt index, MI, and Relaxation Spectrum Index, RSI, such that (RSI)(MI.sup.0.6) is about 2.5 to about 6.5; c) a Crystallizable Chain Length Distribution Index, L.sub.w /L.sub.n, of about 1.0 to about 9; and d) a density, .rho., and a percent haze when fabricated into films such that the percent haze is less than 370.rho.-330, are provided. These ethylene polymers advantageously combine superior clarity and toughness with low extractables and enhanced processing ease.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: December 12, 2000
    Assignee: Univation Technologies, LLC
    Inventors: George Norris Foster, Tong Chen, Robert Harold Vogel, Scott Hanley Wasserman, Day-Chyuan Lee, Walter Thomas Reichle, Frederick John Karol, Gregory Todd Whiteker
  • Patent number: 5798427
    Abstract: An ethylene polymer having a Polydispersity Index of at least about 3.0, a melt index, MI, and a Relaxation Spectrum Index, RSI, such that (RSI)(MI.sup..alpha.) is greater than about 26 when .alpha. is about 0.7, and a Crystallizable Chain Length Distribution Index, L.sub.w /L.sub.n, less than about 3 is provided. Such ethylene polymer has processability equivalent or superior to even conventional high pressure polyethylene at similar melt index, yet need not be made under high pressure reaction conditions.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: August 25, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: George Norris Foster, Tong Chen, Scott Hanley Wasserman, Day-Chyuan Lee, Stuart Jacob Kurtz, Laurence Herbert Gross, Robert Harold Vogel