Patents by Inventor Kouichi Kizu

Kouichi Kizu 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: 12240930
    Abstract: Described is a cyclic olefin-based copolymer has a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring. Also described is a medical container containing a cyclic olefin-based copolymer having a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring.
    Type: Grant
    Filed: January 23, 2023
    Date of Patent: March 4, 2025
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hideki Wasa, Haruka Saito, Sunil Krzysztof Moorthi, Futoshi Fujimura, Masahiko Okamoto, Emi Oniki, Kouichi Kizu, Jiacheng He
  • Patent number: 12209147
    Abstract: Provided is a cyclic olefin-based resin composition including a cyclic olefin-based polymer (A), and a hindered amine compound (Y) that contains a piperidyl group represented by General Formula (1) and a carboxylic acid amide group represented by General Formula (2) within the same molecule.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: January 28, 2025
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Masakatsu Kasuya, Kouichi Kizu, Yasuyuki Soeda, Takayuki Okuno, Hisahiro Kato, Keisuke Endo
  • Patent number: 11732075
    Abstract: Described is a cyclic olefin-based copolymer has a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring. Also described is a medical container containing a cyclic olefin-based copolymer having a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: August 22, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hideki Wasa, Haruka Saito, Sunil Krzysztof Moorthi, Futoshi Fujimura, Masahiko Okamoto, Emi Oniki, Kouichi Kizu, Jiacheng He
  • Publication number: 20230159684
    Abstract: Described is a cyclic olefin-based copolymer has a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring. Also described is a medical container containing a cyclic olefin-based copolymer having a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring.
    Type: Application
    Filed: January 23, 2023
    Publication date: May 25, 2023
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hideki WASA, Haruka SAITO, Sunil Krzysztof MOORTHI, Futoshi FUJIMURA, Masahiko OKAMOTO, Emi ONIKI, Kouichi KIZU, Jiacheng HE
  • Publication number: 20220227896
    Abstract: Provided is a cyclic olefin-based resin composition including a cyclic olefin-based polymer (A), and a hindered amine compound (Y) that contains a piperidyl group represented by General Formula (1) and a carboxylic acid amide group represented by General Formula (2) within the same molecule.
    Type: Application
    Filed: May 14, 2020
    Publication date: July 21, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Masakatsu KASUYA, Kouichi KIZU, Yasuyuki SOEDA, Takayuki OKUNO, Hisahiro KATO, Keisuke ENDO
  • Publication number: 20200369812
    Abstract: Described is a cyclic olefin-based copolymer has a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring. Also described is a medical container containing a cyclic olefin-based copolymer having a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring.
    Type: Application
    Filed: November 27, 2018
    Publication date: November 26, 2020
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hideki WASA, Haruka SAITO, Sunil Krzysztof MOORTHI, Futoshi FUJIMURA, Masahiko OKAMOTO, Emi ONIKI, Kouichi KIZU, Jiacheng HE
  • Patent number: 8883925
    Abstract: A cyclic olefin polymer composition comprising: [A] a specific cyclic olefin polymer having a softening temperature (TMA) of 120 to 300° C.; and [B] a specific cyclic olefin polymer having a glass transition temperature (Tg) of 50° C. or lower, wherein the absolute value of the difference between nD[A] and nD[B] is 0.014 or less in which nD[B] represents a refractive index of the cyclic olefin polymer [B] and nD[A] represent that of the cyclic olefin polymer [A], and the component [A] is contained in an amount of 50 to 95 parts by weight and the component [B] is contained in an amount of 5 to 50 parts by weight (provided that the total amount of the components [A] and [B] is defined as 100 parts by weight).
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: November 11, 2014
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kouichi Kizu, Masako Takamatsu, Michio Tsugawa, Ryouichi Seki
  • Patent number: 8633290
    Abstract: An optical resin comprises a copolymer of 4-methyl-1-pentene and at least one monomer selected from the group consisting of 3-methyl-1-pentene, 3-methyl-1-butene and 4,4-dimethyl-1-pentene. The content of a constituent unit (a) derived from 4-methyl-1-pentene is equal to or more than 60 mol % and equal to or less than 99 mol %, and the total content of a constituent unit (b) derived from at least one monomer selected from the group consisting of 3-methyl-1-pentene, 3-methyl-1-butene and 4,4-dimethyl-1-pentene is equal to or more than 1 mol % and equal to or less than 40 mol %.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: January 21, 2014
    Assignees: Mitsui Chemicals, Inc., Sharp Corporation
    Inventors: Satoshi Kawamoto, Kouichi Kizu, Sunil Krzysztof Moorthi, Akira Sakai
  • Publication number: 20110105710
    Abstract: An optical resin comprises a copolymer of 4-methyl-1-pentene and at least one monomer selected from the group consisting of 3-methyl-1-pentene, 3-methyl-1-butene and 4,4-dimethyl-1-pentene. The content of a constituent unit (a) derived from 4-methyl-1-pentene is equal to or more than 60 mol % and equal to or less than 99 mol %, and the total content of a constituent unit (b) derived from at least one monomer selected from the group consisting of 3-methyl-1-pentene, 3-methyl-1-butene and 4,4-dimethyl-1-pentene is equal to or more than 1 mol % and equal to or less than 40 mol %.
    Type: Application
    Filed: July 13, 2009
    Publication date: May 5, 2011
    Applicants: MITSUI CHEMICALS, INC., Sharp Corporation
    Inventors: Satoshi Kawamoto, Kouichi Kizu, Sunil Krzystof Moorthi, Akira Sakai
  • Patent number: 7803888
    Abstract: A novel olefin-based polymer has excellent thermal resistance, as well as excellent balance among various properties. The olefin-based polymer is an olefin-based polymer comprising 50 to 100% by weight of a constituent unit derived from 4-methyl-1-pentene, and 0 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties: i) the diad isotacticity is 70% or greater, ii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5, and iii) the intrinsic viscosity [?] is 0.5 (dl/g) or greater.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: September 28, 2010
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Nobuo Kawahara, Shinichi Kojoh, Shingo Matsuo, Hideyuki Kaneko, Tomoaki Matsugi, Norio Kashiwa, Munehito Funaya, Naritoshi Hirota, Tooru Tanaka, Toshiyuki Hirose, Nobuhisa Mikawa, Kouichi Kizu, Keiji Okada
  • Publication number: 20100081768
    Abstract: A cyclic olefin polymer composition comprising: [A] a specific cyclic olefin polymer having a softening temperature (TMA) of 120 to 300° C.; and [B] a specific cyclic olefin polymer having a glass transition temperature (Tg) of 50° C. or lower, wherein the absolute value of the difference between nD[A] and nD[B] is 0.014 or less in which nD[B] represents a refractive index of the cyclic olefin polymer [B] and nD[A] represents that of the cyclic olefin polymer [A], and the component [A] is contained in an amount of 50 to 95 parts by weight and the component [B] is contained in an amount of 5 to 50 parts by weight (provided that the total amount of the components [A] and [B] is defined as 100 parts by weight).
    Type: Application
    Filed: December 3, 2007
    Publication date: April 1, 2010
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Kouichi Kizu, Masako Takamatsu, Michio Tsugawa, Ryouichi Seki
  • Publication number: 20090186985
    Abstract: The present invention relates to olefinic compositions comprising a functionalized branched olefin copolymer containing functionalized sidechains derived from olefin and at least one chain end nucleophilic heteroatom containing functional group with at least one protic hydrogen, optionally with one or more copolymerizable monomers, the copolymer characterized by having A) a Tg<?10° C. as measured by DSC; B) a Ta>100° C.; C) an elongation at break of greater than or equal to 500 percent; D) a Tensile Strength of greater than or equal to 1,500 psi (10,300 kPa) at 25° C.; E) a TMA temperature>80° C., and F) an elastic recovery of greater than or equal to 50 percent.
    Type: Application
    Filed: January 21, 2005
    Publication date: July 23, 2009
    Inventors: Roger L. Kuhlman, Timothy T. Wenzel, Yunwa W. Cheung, Phillip D. Hustad, Edmund M. Carnahan, John R. Briggs, Brian A. Jazdzewski, Wenbin Liang, Roji Mori, Kouichi Kizu, Nobuo Kawahara, Shingo Matuso, Shinichi Kojoh, Norio Kashiwa
  • Publication number: 20090161045
    Abstract: The present invention is to provide a method of compensating the wavelength dependence of birefringence of an optical part (B) which comprises using a film (a) made of a (co)polymer (?) obtained from at least one olefin selected among 4-methyl-1-pentene, 3-methyl-1-pentene, and 3-methyl-1-butene as a (co)monomer ingredient.
    Type: Application
    Filed: April 27, 2007
    Publication date: June 25, 2009
    Inventors: Satoshi Kawamoto, Eiichi Takahashi, Kouichi Kizu, Toru Takaoka, Michio Tsugawa, Ryouichi Seki, Shiro Shichijyo, Yoshikazu Yamada, Akira Sakai
  • Publication number: 20080281046
    Abstract: Disclosed is a propylene based resin composition comprising 1 to 99% by weight of a specific propylene based polymer (A) and 99 to 1% by weight of an olefin based block copolymer (B) comprising specific polymer segments (B1), (B1?) and (B2) (wherein the total amount of the propylene based polymer (A) and the olefin based block copolymer (B) is 100% by weight).
    Type: Application
    Filed: August 22, 2006
    Publication date: November 13, 2008
    Inventors: Ryoji Mori, Kouichi Kizu, Tomoaki Matsugi, Shinichi Kojoh
  • Publication number: 20070249792
    Abstract: A novel olefin-based polymer has excellent thermal resistance, as well as excellent balance among various properties. The olefin-based polymer is an olefin-based polymer comprising 50 to 100% by weight of a constituent unit derived from 4-methyl-1-pentene, and 0 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties: i) the diad isotacticity is 70% or greater, ii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5, and iii) the intrinsic viscosity [?] is 0.5 (dl/g) or greater.
    Type: Application
    Filed: June 9, 2005
    Publication date: October 25, 2007
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Nobuo Kawahara, Shinichi Kojoh, Shingo Matsuo, Hideyuki Kaneko, Tomoaki Matsugi, Norio Kashiwa, Munehito Funaya, Naritoshi Hirota, Tooru Tanaka, Toshiyuki Hirose, Nobuhisa Mikawa, Kouichi Kizu, Keiji Okada
  • Patent number: 7259211
    Abstract: (i) A material is developed which modifies the rigidity, tensile elongation at break and impact resistance of resins such as a polypropylene resin when used as a modifier. The invention relates to an ethylene type ternary copolymer (A) comprising (i) an ethylene, propylene or 1-butene and a higher ?-olefin having 6 to 20 carbon atoms, wherein the content of ethylene is 70 to 89 mol %, the content of propylene or 1-butene is 10 to 22 mol % and the content of a higher ?-olefin having 6 to 20 carbon atoms is 1 to 11 mol % and the molar ratio of the higher-olefin having 6 to 20 carbon atoms to the structural units except for ethylene (either propylene or 1-butene and the higher ?-olefin having 6 to 20 carbon atoms) is 1/10 to 5/10 and the ethylene type ternary copolymer has a density of 0.857 to 0.885 g/cm3. The invention also relates to (ii) a propylene type resin composition comprising a propylene type polymer (B), the ethylene type ternary copolymer (A) and an inorganic filler (C).
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: August 21, 2007
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kouichi Kizu, Keiji Okada, Masayoshi Yamaguchi
  • Patent number: 6914112
    Abstract: An ethylene-based copolymer is useful as a modifier for resins, e.g., polypropylene, and can be used in an ethylene/?-olefin copolymer composition containing the same ethylene-based copolymer. The inventive copolymer is characterize by: (a-1) having temperature (Tm) at the maximum peak in the endothermic curve, measured by a differential scanning calorimeter (DSC), of 40 to 90° C., (a-2) containing the component soluble in decane at normal temperature at 1 to 70% b weight, and (a-3) containing the component soluble in decane at normal temperature which comprises (i) a recurring unit derived from ethylene and (ii) a recurring unit derived from an ?-olefin of 4 or more carbon atoms, and in which a content of (i) the recurring unit derived from ethylene is 50 to 75% by mole.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: July 5, 2005
    Assignee: Mitsui Chemical, Inc.
    Inventors: Ryoji Mori, Kouichi Kizu, Keiji Okada, Kazuyuki Takimoto
  • Publication number: 20050131158
    Abstract: (i) A material is developed which modifies the rigidity, tensile elongation at break and impact resistance of resins such as a polypropylene resin when used as a modifier. The invention relates to an ethylene type ternary copolymer (A) comprising (i) an ethylene, propylene or 1-butene and a higher ?-olefin having 6 to 20 carbon atoms, wherein the content of ethylene is 70 to 89 mol %, the content of propylene or 1-butene is 10 to 22 mol % and the content of a higher ?-olefin having 6 to 20 carbon atoms is 1 to 11 mol % and the molar ratio of the higher-olefin having 6 to 20 carbon atoms to the structural units except for ethylene (either propylene or 1-butene and the higher ?-olefin having 6 to 20 carbon atoms) is 1/10 to 5/10 and the ethylene type ternary copolymer has a density of 0.857 to 0.885 g/cm3. The invention also relates to (ii) a propylene type resin composition comprising a propylene type polymer (B), the ethylene type ternary copolymer (A) and an inorganic filler (C).
    Type: Application
    Filed: November 26, 2004
    Publication date: June 16, 2005
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Kouichi Kizu, Keiji Okada, Masayoshi Yamaguchi
  • Patent number: 6841583
    Abstract: A composition that has an ethylene/?-olefin copolymer (A), a blowing agent (B), and optionally, an organic peroxide and a crosslinking assistant. The ethylene/?-olefin copolymer (A) has an ethylene/?-olefin copolymer (A1) having a density of not less than 0.880 g/cm3 and less than 0.900 g/cm3 and MFR (190° C.) of 0.1 to 50 g/10 min and an ethylene/?-olefin copolymer (A2) having a density of 0.900 to 0.930 g/cm3, MFR (190° C.) of 0.1 to 50 g/10 min and a main melting point peak at a position of not higher than 110° C., in a specific ratio. A foamed product, obtained by heat treatment of the composition, may be further subjected to secondary compression. A laminate made of the foamed product and a layer made of a polyolefin, a polyurethane, a rubber, a leather or an artificial leather. Footwear or a footwear part made of the foamed product or the laminate.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: January 11, 2005
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Takanori Sueda, Masayoshi Yamaguchi, Atsushi Komoriya, Kouichi Kizu
  • Publication number: 20030114579
    Abstract: The present invention relates to an ethylene-based copolymer useful as a modifier for resins, e.g., polypropylene, and an ethylene/&agr;-olefin copolymer composition containing the same ethylene-based copolymer.
    Type: Application
    Filed: January 10, 2002
    Publication date: June 19, 2003
    Inventors: Ryoji Mori, Kouichi Kizu, Keiji Okada, Kazuyuki Takimoto