Patents by Inventor Christiaan Henricus Johannes Koevoets

Christiaan Henricus Johannes Koevoets 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: 11661514
    Abstract: A composition useful for the injection molding of fluid engineering parts includes specific amounts of a poly(phenylene ether), a homopolystyrene, a hydrogenated block copolymer of an alkenyl aromatic monomer and a conjugated diene, a linear low density polyethylene, and a reinforcing filler. A method of making the composition and articles prepared from the composition are also described.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: May 30, 2023
    Assignee: SHPP GLOBAL TECHNOLOGIES B.V.
    Inventors: Jung Ah Lee, Christopher Ryan Ziegler, Christiaan Henricus Johannes Koevoets
  • Publication number: 20200332116
    Abstract: A composition useful for the injection molding of fluid engineering parts includes specific amounts of a poly(phenylene ether), a homopolystyrene, a hydrogenated block copolymer of an alkenyl aromatic monomer and a conjugated diene, a linear low density polyethylene, and a reinforcing filler. A method of making the composition and articles prepared from the composition are also described.
    Type: Application
    Filed: January 3, 2019
    Publication date: October 22, 2020
    Inventors: Jung Ah LEE, Christopher Ryan ZIEGLER, Christiaan Henricus Johannes KOEVOETS
  • Publication number: 20190136032
    Abstract: A lined pipe includes an outer layer and an inner layer. The outer layer contains crosslinked polyethylene, polypropylene, poly(1-butene), or poly(vinyl chloride). The inner layer contains poly(phenylene ether), polystyrene, and, optionally, a hydrogenated block copolymer. The inner layer exhibits low stimulation of bacterial growth. Also described are a composition exhibiting low stimulation of bacterial growth, an injection molded article, and a method of controlling microbial growth during transportation or storage of water.
    Type: Application
    Filed: March 3, 2017
    Publication date: May 9, 2019
    Inventors: Christiaan Henricus Johannes Koevoets, Johannes E. Fortuijn
  • Patent number: 10213980
    Abstract: A lined pipe or fitting includes an outer layer containing high density polyethylene, and an inner layer containing a blend of poly(phenylene ether), polystyrene, and, optionally, a hydrogenated block copolymer. Relative to corresponding pipes and fittings made from high density polyethylene alone, the lined pipes and fittings exhibit improved resistance to chlorine and chlorine derivatives.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: February 26, 2019
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Christiaan Henricus Johannes Koevoets, Johannes Everardus Fortuijn, Biagio Banfi
  • Publication number: 20180056622
    Abstract: A lined pipe or fitting includes an outer layer containing high density polyethylene, and an inner layer containing a blend of poly(phenylene ether), polystyrene, and, optionally, a hydrogenated block copolymer. Relative to corresponding pipes and fittings made from high density polyethylene alone, the lined pipes and fittings exhibit improved resistance to chlorine and chlorine derivatives.
    Type: Application
    Filed: February 29, 2016
    Publication date: March 1, 2018
    Inventors: Christiaan Henricus Johannes Koevoets, Johannes Everardus Fortuijn, Biagio Banfi
  • Patent number: 8871865
    Abstract: Disclosed is a thermoplastic composition comprising a polycarbonate terpolymer comprising structures derived from structures (I), (II) and (III), wherein (I) is a dihydroxy compound having the structure (A): wherein n is 0 to 4 and Rf is independently a halogen atom, a C1-10 hydrocarbon group, or a C1-10 halogen substituted hydrocarbon group; (II) comprises a second dihydroxy compound derived from Formula (A) and different from (I) and wherein n and Rf are as previously defined; and (III) a third dihydroxy compound not derived from Formula (A), wherein the sum of the mol percent of all of structures (I) and (II) is greater than 45% relative to the sum of the molar amounts of all of structures (I), (II) and (III) in the polycarbonate terpolymer and wherein said polycarbonate terpolymer is amorphous; an impact modifier; an ungrafted rigid copolymer; and a flame retardant. The thermoplastic composition has improved chemical resistance and flame retardance.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: October 28, 2014
    Assignee: Sabic Global Technologies B.V.
    Inventors: Bernardus Johannes Paulus Jansen, Christiaan Henricus Johannes Koevoets, Edward Kung, Wilhelmus Johannes Daniel Steendam
  • Patent number: 8691902
    Abstract: A thermoplastic polycarbonate composition includes, based on the total weight of the thermoplastic polycarbonate composition: 15 to less than 40 wt. % of a reinforcing mineral filler; and greater than 60 to 85 wt. % of a polymer component, including, based on the weight of the polymer component, 68 to 99.9 wt. % of an aromatic polycarbonate, 0.1 to 2 wt. % of a fluorinated polymer, optionally, 0.1 to 25 wt. % of an impact modifier; and optionally, 0.1 to 5 wt. % of an additive composition including an antioxidant, a mold release agent, and a stabilizer; wherein a molded sample of the thermoplastic polycarbonate composition has no drips when measured in accordance with NF P 92-505 at a thickness of 3.0 mm.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: April 8, 2014
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Snezana Grcev, Christiaan Henricus Johannes Koevoets, Christianus Johannes Jacobus Maas, Hendrik Cornelis Jacobus de Nooijer, Srinivas Siripurapu, Karin Irene van de Wetering
  • Publication number: 20110229704
    Abstract: A thermoplastic polycarbonate composition includes, based on the total weight of the thermoplastic polycarbonate composition: 15 to less than 40 wt. % of a reinforcing mineral filler; and greater than 60 to 85 wt. % of a polymer component, including, based on the weight of the polymer component, 68 to 99.9 wt. % of an aromatic polycarbonate, 0.1 to 2 wt. % of a fluorinated polymer, optionally, 0.1 to 25 wt. % of an impact modifier; and optionally, 0.1 to 5 wt. % of an additive composition including an antioxidant, a mold release agent, and a stabilizer; wherein a molded sample of the thermoplastic polycarbonate composition has no drips when measured in accordance with NF P 92-505 at a thickness of 3.0 mm.
    Type: Application
    Filed: December 8, 2009
    Publication date: September 22, 2011
    Inventors: Snezana Grcev, Christiaan Henricus Johannes Koevoets, Christianus Johannes Jacobus Maas, Hendrik Cornelis Jacobus De Nooijer, Srinivas Siripurapu, Karin Irene Van De Wetering
  • Publication number: 20090215949
    Abstract: Blends of polycarbonate (PC) with an impact modifier, such as a butadiene-styrene based polymer like acrylonitrile-butadiene-styrene (ABS) polymers or methacrylate-butadiene-styrene (MBS) polymers, having improved flame retardance are disclosed. From about 0.5% to about 3% by weight of a filler selected from the group consisting of a clay, talc, and aluminum oxide particles are added to the blend. The resulting flame retardant polymer composition has improved flame retardance with acceptable maintenance of mechanical and/or processing properties.
    Type: Application
    Filed: February 21, 2008
    Publication date: August 27, 2009
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Tomohide Fujiguchi, Christiaan Henricus Johannes Koevoets, Ying Li, Pei Sun
  • Publication number: 20090057621
    Abstract: Disclosed herein is a method of manufacturing an electrically conductive composition comprising reducing the viscosity of a molten masterbatch to form a reduced viscosity molten masterbatch; and mixing the reduced viscosity molten masterbatch with a polymer to form the electrically conductive composition. Disclosed herein too is a method of manufacturing an electrically conductive composition comprising mixing a molten masterbatch with a first polymer in a first extruder, wherein the first polymer has a melt viscosity that is lower than the melt viscosity of the molten masterbatch; reducing the melt viscosity of the molten masterbatch to form a reduced viscosity molten masterbatch; and mixing the reduced viscosity molten masterbatch with a second polymer in a second extruder to form the electrically conductive composition.
    Type: Application
    Filed: September 9, 2008
    Publication date: March 5, 2009
    Applicant: SABIC INNOVATIVE PLASTICS
    Inventors: Jan Peter Keulen, Christiaan Henricus Johannes Koevoets
  • Patent number: 7462656
    Abstract: Disclosed herein is a method of manufacturing an electrically conductive composition comprising reducing the viscosity of a molten masterbatch to form a reduced viscosity molten masterbatch; and mixing the reduced viscosity molten masterbatch with a polymer to form the electrically conductive composition. Disclosed herein too is a method of manufacturing an electrically conductive composition comprising mixing a molten masterbatch with a first polymer in a first extruder, wherein the first polymer has a melt viscosity that is lower than the melt viscosity of the molten masterbatch; reducing the melt viscosity of the molten masterbatch to form a reduced viscosity molten masterbatch; and mixing the reduced viscosity molten masterbatch with a second polymer in a second extruder to form the electrically conductive composition.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: December 9, 2008
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Jan Peter Keulen, Christiaan Henricus Johannes Koevoets
  • Publication number: 20080029744
    Abstract: Disclosed is a thermoplastic composition comprising a polycarbonate terpolymer comprising structures derived from structures (I), (II) and (III), wherein (I) is a dihydroxy compound having the structure (A): wherein n is 0 to 4 and Rf is independently a halogen atom, a C1-10 hydrocarbon group, or a C1-10 halogen substituted hydrocarbon group; (II) comprises a second dihydroxy compound derived from Formula (A) and different from (I) and wherein n and Rf are as previously defined; and (III) a third dihydroxy compound not derived from Formula (A), wherein the sum of the mol percent of all of structures (I) and (II) is greater than 45% relative to the sum of the molar amounts of all of structures (I), (II) and (III) in the polycarbonate terpolymer and wherein said polycarbonate terpolymer is amorphous; an impact modifier; an ungrafted rigid copolymer; and a flame retardant. The thermoplastic composition has improved chemical resistance and flame retardance.
    Type: Application
    Filed: June 12, 2007
    Publication date: February 7, 2008
    Applicant: General Electric Company
    Inventors: Bernardus Johannes Paulus Jansen, Christiaan Henricus Johannes Koevoets, Edward Kung, Wilhelmus Johannes Daniel Steendam
  • Publication number: 20060069207
    Abstract: Disclosed are compositions comprising: (i) a rubber modified thermoplastic resin comprising a discontinuous elastomeric phase dispersed in a rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is grafted to the elastomeric phase; (ii) at least two additives selected from the group consisting of glass beads; fluoropolymers; ethylene bis-stearamide; a mixture of at least one metal salt of a fatty acid and at least one amide; a homopolymer comprising structural units derived from at least one (C1-C12)alkyl(meth)acrylate monomer; and mixtures thereof; and optionally (iii) at least one additive selected from the group consisting of a silicone oil and a linear low density polyethylene; wherein said composition has a critical shear rate value of greater than about 50 reciprocal seconds as measured at 190° C. in a capillary rheometer with 10 mm length and 1 mm diameter.
    Type: Application
    Filed: September 29, 2004
    Publication date: March 30, 2006
    Inventors: Sandeep Dhawan, Satish Gaggar, Wenyu Shang, Shuwen Peng, Patricia Sun, Christiaan Henricus Johannes Koevoets