Patents by Inventor Hwee Tatz Thai

Hwee Tatz Thai 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).

  • Publication number: 20240025161
    Abstract: Provided are laminates including polyethylene and an extruded web layer. The laminates can be adhesiveless and fully compatible with polyethylene recycling streams. They can exhibit improved, maintained, or desirable properties in comparison to existing laminate structures that are not fully compatible with polyethylene recycling streams. The laminate comprises a first film, an extruded web layer, and a second film, where the extruded web layer is between the first film and a lamination layer of the second film and the laminate is formed via extrusion lamination of the extruded web layer.
    Type: Application
    Filed: January 13, 2022
    Publication date: January 25, 2024
    Inventors: Edward L. Lee, Hwee Tatz Thai, Wu Aik Yee, Hwee Lun Goh
  • Patent number: 11833807
    Abstract: Multilayer film embodiments are directed to films produced via thermal lamination without adhesive due to the use of tie layers comprising a blend of ethylene acrylate copolymer and an anhydride grafted ethylene ?-olefin copolymer.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: December 5, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Wu Aik Yee, Edward L. Lee, Hwee Tatz Thai, Hwee Lun Goh
  • Publication number: 20230142282
    Abstract: Provided are heat sealing, barrier laminates including polyethylene. The laminates can be adhesiveless and fully compatible with polyethylene recycling streams. They can exhibit improved, maintained, or desirable properties in comparison to existing laminate structures that are not fully compatible with polyethylene recycling streams. The laminate comprises a multilayer film and an oriented film. The oriented film is thermally laminated to the outer layer of the multilayer film to provide the laminate.
    Type: Application
    Filed: April 26, 2021
    Publication date: May 11, 2023
    Inventors: Edward L. Lee, Hwee Tatz Thai, Wu Aik Yee, Hwee Lun Goh
  • Publication number: 20230131094
    Abstract: Provided are barrier laminates including polyethylene which offer heat resistance and a wide sealing window. The laminates can be fully compatible with polyethylene recycling streams and can exhibit improved, maintained, or desirable properties in comparison to existing laminate structures that are not fully compatible with polyethylene recycling streams. The laminate comprises a multilayer film, a polyethylene film, and an adhesive. The adhesive adheres the multilayer film to the polyethylene film to provide the laminate.
    Type: Application
    Filed: April 26, 2021
    Publication date: April 27, 2023
    Inventors: Hwee Lun Goh, Hwee Tatz Thai, Edward L. Lee, Wu Aik Yee
  • Publication number: 20220355574
    Abstract: Multilayer film embodiments are directed to films produced via thermal lamination without adhesive due to the use of tie layers comprising a blend of ethylene acrylate copolymer and an anhydride grafted ethylene ?-olefin copolymer
    Type: Application
    Filed: June 24, 2020
    Publication date: November 10, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Wu Aik Yee, Edward L. Lee, Hwee Tatz Thai, Hwee Lun Goh
  • Publication number: 20220250363
    Abstract: Multilayer films comprising an outer layer, a sealant layer, and a tie layer positioned between the outer layer and the sealant layer are provided. The outer layer includes one or more of a first polyethylene having a density of greater than 0.945 g/cc and a polyethylene having a density of from 0.910 to 0.940 g/cc. The sealant layer includes one or more of at least one ethylene acid copolymer having from 0.1 to 10 wt % neutralized with a cation source, a polyethylene plastomer having a density below 0.910 g/cc, and an ethylene based polymer having a melting point Tm (DSC) of less than or equal to 108° C. The tie layer includes an adhesive resin selected from the group consisting of anhydride grafted ethylene based polymer, ethylene acid copolymer, and ethylene vinyl acetate.
    Type: Application
    Filed: June 24, 2020
    Publication date: August 11, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Edward L. Lee, Hwee Tatz Thai, Wu Aik Yee, Hwee Lun Goh
  • Publication number: 20100178827
    Abstract: A roofing underlayment comprising a top layer, a bottom layer and a water-sealing composition layer positioned between the top layer and the bottom layer wherein the water-sealing composition consists essentially of at least 80 weight % of a copolymer of ethylene and at least one comonomer selected from the group consisting of alkyl acrylate, alkyl methacrylate and vinyl acetate is disclosed. The top and bottom layers independently comprise a fabric selected from the group consisting of nonwoven polypropylene, nonwoven polyethylene, nonwoven polyethylene terephthalate, woven polypropylene, woven polyethylene, spunbond polypropylene, and spunbond polyester. The roofing underlayment may optionally comprise additional layers.
    Type: Application
    Filed: July 17, 2009
    Publication date: July 15, 2010
    Applicant: E.I.DU PONT DE NEMOURS AND COMPANY
    Inventors: Hwee Tatz Thai, Han IL Lee
  • Patent number: 7381767
    Abstract: Disclosed are compositions and shaped articles comprising or produced from the compositions. The compositions can comprise (a) at least one polypropylene polymer and (b) at least one E/X/Y copolymer wherein E comprises ethylene; X is a monomer such as vinyl acetate and alkyl (meth)acrylic esters; and Y is one or more additional comonomers such as carbon monoxide; sulfur dioxide; acrylonitrile; maleic anhydride; maleic acid diesters; (meth)acrylic acid, maleic acid, maleic acid monoesters, itaconic acid, fumaric acid, fumaric acid monoester, and salts thereof; glycidyl acrylate, glycidyl methacrylate, and glycidyl vinyl ether in which, based on the E/X/Y copolymer, X is from 0 to 50 weight %, Y is from 0 to 35 weight % of said, X and Y cannot both be 0%, and E is the remainder.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: June 3, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Xiyun Serene Fan, Hwee Tatz Thai
  • Publication number: 20040229988
    Abstract: Disclosed are films, tapes, slit film fibers and melt-spun fibers comprising (a) at least one polypropylene polymer selected from the group consisting of polypropylene homopolymers; random copolymers or block copolymers of polypropylene and ethylene; and random terpolymers or block terpolymers of polypropylene, ethylene and one other olefin; and (b) from 1 to 30 weight % of at least one ethylene/alkyl acrylate copolymer. The tapes can be stretched (i.e. uniaxially oriented) to provide monofilament slit film fibers. Also disclosed are processes for preparing such fibers. Also disclosed are nonwoven textiles prepared from the melt-spun fibers.
    Type: Application
    Filed: February 17, 2004
    Publication date: November 18, 2004
    Inventors: Hwee Tatz Thai, Sam Louis Samuels, Loic Pierre Rolland
  • Publication number: 20040224591
    Abstract: Disclosed are films, tapes, slit film fibers and melt-spun fibers comprising (a) at least one polypropylene polymer selected from the group consisting of polypropylene homopolymers; random copolymers or block copolymers of polypropylene and ethylene; and random terpolymers or block terpolymers of polypropylene, ethylene and one other olefin; and (b) from 1 to 30 weight % of at least one ethylene/alkyl acrylate copolymer. The tapes can be stretched (i.e. uniaxially oriented) to provide monofilament slit film fibers. Also disclosed are processes for preparing such fibers. Also disclosed are nonwoven textiles prepared from the melt-spun fibers.
    Type: Application
    Filed: June 10, 2004
    Publication date: November 11, 2004
    Inventors: Hwee Tatz Thai, Sam Louis Samuels, Loic Pierre Rolland