Patents by Inventor Hiroo Kamikawa

Hiroo Kamikawa 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: 11608427
    Abstract: The present invention provides a resin composition having high heat-resisting properties, with which a shaping can be performed in accordance with designed sizes using a fused deposition modeling method-3D printer, and from which a shaped object having a small warpage and small changes in sizes due to water can be obtained. The present invention relates to a resin composition for a shaping material of a fused deposition modeling method-3D printer, comprising cellulose fibers in a polyamide.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: March 21, 2023
    Assignee: UNITIKA LTD.
    Inventors: Miho Nakai, Azusa Usui, Shohei Kumazawa, Shota Noguchi, Fumio Matsuoka, Hiroo Kamikawa
  • Publication number: 20220380539
    Abstract: The present invention provides a resin composition capable of giving a molded body having a metallic color tone and excellent in surface hardness, surface glossiness, mechanical properties, and flow mark reducing property. The present invention relates to a polyamide resin composition comprising 100 parts by mass of a polyamide (A), 0.1 to 50 parts by mass of a cellulose fiber (B) having an average fiber diameter of 10 ?m or less and 0.1 to 12 parts by mass of a metallic pigment (C).
    Type: Application
    Filed: October 6, 2020
    Publication date: December 1, 2022
    Applicant: UNITIKA LTD.
    Inventors: Tsuyoshi TOMOTOSHI, Shota NOGUCHI, Miho NAKAI, Hiroo KAMIKAWA
  • Publication number: 20210332240
    Abstract: The present invention provides a resin composition excellent in mechanical properties, stiffness properties, appearance characteristics, flame retardancy and metal corrosion resistance and having a small environmental load, compared to those of conventional polyamide-based flame-retardant resin compositions. The present invention related to a flame-retardant resin composition, comprising: 35 to 85% by mass of a polyamide resin (A); 0.45 to 30% by mass of a cellulose fiber (B) having an average fiber diameter of 10 ?m or less; 4.5 to 40% by mass of metal phosphinate (C); and 0 to 35% by mass of a reinforcing material (D) other than the cellulose fiber.
    Type: Application
    Filed: July 17, 2019
    Publication date: October 28, 2021
    Applicant: UNITIKA LTD.
    Inventors: Miho NAKAI, Shota NOGUCHI, Shohei KUMAZAWA, Hiroo KAMIKAWA
  • Publication number: 20210002478
    Abstract: Provided is a resin composition formodeling materials for fused deposition modeling 3D printers, the resin composition containing a polyarylate resin (A) and a polyester resin (B), containing the component (A) and a polyamide resin (C), or containing tape component (A) and a polycarbonate resin (D).
    Type: Application
    Filed: March 27, 2019
    Publication date: January 7, 2021
    Applicant: UNITIKA LTD.
    Inventors: Azusa Usui, Hiroo Kamikawa, Fumio Matsuoka, Shohei Kumazawa
  • Publication number: 20200362144
    Abstract: The present invention provides a resin composition having high heat-resisting properties, with which a shaping can be performed in accordance with designed sizes using a fused deposition modeling method-3D printer, and from which a shaped object having a small warpage and small changes in sizes due to water can be obtained. The present invention relates to a resin composition for a shaping material of a fused deposition modeling method-3D printer, comprising cellulose fibers in a polyamide.
    Type: Application
    Filed: October 29, 2018
    Publication date: November 19, 2020
    Applicant: UNITIKA LTD.
    Inventors: Miho NAKAI, Azusa USUI, Shohei KUMAZAWA, Shota NOGUCHI, Fumio MATSUOKA, Hiroo KAMIKAWA
  • Publication number: 20200340529
    Abstract: The present invention provides a sliding member which is superior to a conventional polyamide sliding member not only in mechanical properties (especially, flexural property) but also in sliding property. The present invention relates to a sliding member comprising unmodified cellulose fibers or cellulose fibers in which a part of hydroxyl groups from cellulose has been modified with a hydrophilic substituent, which have an average fiber diameter of 10 ?m or less, in an amount of 0.1 to 50 parts by mass with respect to 100 parts by mass of a polyamide resin.
    Type: Application
    Filed: November 14, 2018
    Publication date: October 29, 2020
    Applicant: UNITIKA LTD.
    Inventors: Shota NOGUCHI, Miho NAKAI, Shohei KUMAZAWA, Hiroo KAMIKAWA
  • Patent number: 9879127
    Abstract: Disclosed is a semiaromatic polyamide resin composition including a semiaromatic polyamide (A), a phosphorus-based flame retardant (B) and an inorganic aluminum compound (C), wherein the mass ratio (A/B) between (A) and (B) is 50/50 to 95/5; the amount of the inorganic aluminum compound (C) is 0.1 to 20 parts by mass in relation to 100 parts by mass of the total amount of (A) and (B); (A) is constituted with an aromatic dicarboxylic acid component, an aliphatic diamine component and a monocarboxylic acid component; and the content of the monocarboxylic acid component is 0.3 to 4.0 mol % in relation to the whole monomer components constituting (A).
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: January 30, 2018
    Assignee: UNITIKA LTD.
    Inventors: Junichi Mii, Yutaka Taketani, Taiyo Amari, Hiroo Kamikawa, Yohei Kabashima
  • Publication number: 20170114217
    Abstract: Disclosed is a resin composition including a polyamide (A), a polyester (B) and a white pigment (C), wherein (A) has a melting point of 280° C. or higher, (B) is polycyclohexylenedimethylene terephthalate, a mass ratio (A/B) is 5/95 to 95/5, and a content of (C) is 10 to 150 parts by mass in relation to 100 parts by mass of a total amount of (A) and (B).
    Type: Application
    Filed: June 23, 2015
    Publication date: April 27, 2017
    Applicant: UNITIKA LTD.
    Inventors: Yohei Kabashima, Hiroo Kamikawa, Junichi Mii, Taiyo Amari
  • Publication number: 20170037217
    Abstract: Disclosed is a semi-aromatic polyamide resin composition including 100 parts by mass of a semi-aromatic polyamide (A), 20 to 110 parts by mass of a fibrous reinforcing material (B) and 0.1 to 5 parts by mass of an azine dye (C), wherein the semi-aromatic polyamide (A) includes as the constituent components thereof an aromatic dicarboxylic acid component, an aliphatic diamine component and a monocarboxylic acid component, and has a melting point of 300° C. or higher; and the monocarboxylic acid component constituting the semi-aromatic polyamide (A) is an aliphatic monocarboxylic acid having a molecular weight of 200 or more.
    Type: Application
    Filed: April 27, 2015
    Publication date: February 9, 2017
    Applicant: UNITIKA LTD.
    Inventors: Yutaka Taketani, Junichi Mii, Taiyo Amari, Hiroo Kamikawa, Yohei Kabashima
  • Publication number: 20170022349
    Abstract: Disclosed is a semiaromatic polyamide resin composition including a semiaromatic polyamide (A) and a polyhydric alcohol (B), wherein a mass ratio (A/B) between the semiaromatic polyamide (A) and the polyhydric alcohol (B) is 99.95/0.05 to 90/10; and the semiaromatic polyamide (A) includes as constituent components thereof an aromatic dicarboxylic acid component and an aliphatic diamine component, and has a melting point of 300 to 350° C.
    Type: Application
    Filed: April 13, 2015
    Publication date: January 26, 2017
    Applicant: UNITIKA LTD.
    Inventors: Junichi MII, Taiyo AMARI, Hiroo KAMIKAWA
  • Publication number: 20150376377
    Abstract: Disclosed is a semiaromatic polyamide resin composition including a semiaromatic polyamide (A), a phosphorus-based flame retardant (B) and an inorganic aluminum compound (C), wherein the mass ratio (A/B) between (A) and (B) is 50/50 to 95/5; the amount of the inorganic aluminum compound (C) is 0.1 to 20 parts by mass in relation to 100 parts by mass of the total amount of (A) and (B); (A) is constituted with an aromatic dicarboxylic acid component, an aliphatic diamine component and a monocarboxylic acid component; and the content of the monocarboxylic acid component is 0.3 to 4.0 mol % in relation to the whole monomer components constituting (A).
    Type: Application
    Filed: March 19, 2014
    Publication date: December 31, 2015
    Applicant: UNITIKA LTD.
    Inventors: Junichi Mii, Yutaka Taketani, Taiyo Amari, Hiroo Kamikawa, Yohei Kabashima
  • Patent number: 8933160
    Abstract: A resin composition is provided, which comprises: 40 to 95% by mass of a resin component containing 10 to 100% by mass of a polyarylate resin and 90 to 0% by mass of a polycarbonate resin; and 60 to 5% by mass of spherical silica having an average particle diameter of not greater than 10 ?m. The resin composition is molded into a product.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: January 13, 2015
    Assignee: Unitika Ltd.
    Inventor: Hiroo Kamikawa
  • Patent number: 8586658
    Abstract: Provided is a polylactic acid resin composition obtained by adding a carboxylic acid amide and a carboxylic acid ester each of which has at least one polar group in a molecule to a polylactic acid resin reacted with a (meth)acrylate compound. Also provided is a polylactic acid resin molded article which is a molded article obtained by molding the polylactic acid resin composition, manufactured by setting a mold temperature to a glass transition temperature of a polylactic acid resin plus 20° C. or higher and a melting point thereof minus 20° C. or lower, at the time of injection molding the polylactic acid resin composition. Thus, a resin composition in which a moldability is improved at a temperature at which a polylactic acid resin is crystallized, and a molded article therefrom are provided.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: November 19, 2013
    Assignees: NEC Corporation, Unitika, Ltd.
    Inventors: Shin Serizawa, Tsunenori Yanagisawa, Kazuhiko Inou, Masatoshi Iji, Yohei Kabashima, Kazue Ueda, Hiroo Kamikawa, Norio Fukawa
  • Publication number: 20120248381
    Abstract: A resin composition of a polyarylate resin (A), a polycarbonate resin (B) and an acrylonitrile-styrene copolymer (C), wherein the mass proportions of the components simultaneously satisfy the following condition (I) and the following formula (II): a mass proportion of (A) is 30% by mass or more??(I); (C)/[(A)+(B)+(C)]=5/100 to 30/100??(II).
    Type: Application
    Filed: March 23, 2012
    Publication date: October 4, 2012
    Applicant: UNITIKA LTD.
    Inventors: Takehito SAIJO, Hiroo KAMIKAWA
  • Publication number: 20100292381
    Abstract: Disclosed is a thermoplastic resin composition obtained by mixing together 100 parts by mass of a polylactic acid resin or a polylactic acid resin composition, 0.01 to 10 parts by mass of a peroxide and 0.01 to 5 parts by mass of a silane compound having two or more functional groups selected from an alkoxy group, an acrylic group, a methacrylic group and a vinyl group. The polylactic acid resin composition may include 90 to 99.5% by mass of the polylactic acid resin and 0.5 to 10% by mass of a plasticizer. The thermoplastic resin composition may further include a fibrous reinforcing material and a polycarbodiimide compound, and where necessary, a flame retardant.
    Type: Application
    Filed: December 19, 2008
    Publication date: November 18, 2010
    Applicant: UNITIKA LTD.
    Inventor: Hiroo Kamikawa
  • Publication number: 20100256262
    Abstract: Disclosed is a resin composition including a thermoplastic resin (A), a glass fiber (B) having a ratio of the major axis to the minor axis of the fiber cross section of 1.5 to 10 and a flame retardant (C), wherein the mass ratio (A/B) of the thermoplastic resin (A) to the glass fiber (B) is 30/70 to 95/5, and a part or the whole of the thermoplastic resin (A) is composed of a polyamide 11 resin (A1a) or/and a polyamide 1010 resin (A1b); and the resin composition includes 10 parts by mass or more of the polyamide 11 resin (A1a) or/and the polyamide 1010 resin (A1b) and 5 to 40 parts by mass of the flame retardant (C) in relation to 100 parts by mass of the total amount of the thermoplastic resin (A) and the glass fiber (B).
    Type: Application
    Filed: August 29, 2008
    Publication date: October 7, 2010
    Applicant: UNITIKA LTD.
    Inventors: Tatsunori Masaki, Yohei Kabashima, Ken-ichi Kawada, Hiroo Kamikawa, Sachiko Kokuryo
  • Publication number: 20100197842
    Abstract: Disclosed is a resin composition excellent in mechanical strength, heat resistance, moist-heat durability and flame retardancy, and low in dependence on petroleum products. The resin composition includes a polylactic acid resin (A), a polycarbonate resin (B), a styrene thermoplastic elastomer (C), a monocarbodiimide compound (D) and a polyfunctional carbodiimide compound (E), wherein the mass ratio (A/B) between the polylactic acid resin (A) and the polycarbonate resin (B) is 25/75 to 90/10.
    Type: Application
    Filed: September 26, 2008
    Publication date: August 5, 2010
    Applicant: UNITIKA LTD.
    Inventor: Hiroo Kamikawa
  • Publication number: 20090131601
    Abstract: Disclosed is a resin composition obtained by blending 100 parts by mass of a biodegradable polyester resin, 0.01 to 20 parts by mass of a (meth)acrylic acid ester compound, 0.1 to 20 parts by mass of a peroxide and 0.1 to 50 parts by mass of a glycerin fatty acid ester.
    Type: Application
    Filed: June 5, 2006
    Publication date: May 21, 2009
    Inventors: Yohei Kabashima, Hiroo Kamikawa
  • Publication number: 20090099296
    Abstract: A resin composition is provided, which comprises: 40 to 95% by mass of a resin component containing 10 to 100% by mass of a polyarylate resin and 90 to 0% by mass of a polycarbonate resin; and 60 to 5% by mass of spherical silica having an average particle diameter of not greater than 10 ?m. The resin composition is molded into a product.
    Type: Application
    Filed: November 27, 2006
    Publication date: April 16, 2009
    Inventor: Hiroo Kamikawa
  • Publication number: 20090069463
    Abstract: Provided is a polylactic acid resin composition obtained by adding a carboxylic acid amide and a carboxylic acid ester each of which has at least one polar group in a molecule to a polylactic acid resin reacted with a (meth)acrylate compound. Also provided is a polylactic acid resin molded article which is a molded article obtained by molding the polylactic acid resin composition, manufactured by setting a mold temperature to a glass transition temperature of a polylactic acid resin plus 20° C. or higher and a melting point thereof minus 20° C. or lower, at the time of injection molding the polylactic acid resin composition. Thus, a resin composition in which a moldability is improved at a temperature at which a polylactic acid resin is crystallized, and a molded article therefrom are provided.
    Type: Application
    Filed: February 13, 2007
    Publication date: March 12, 2009
    Inventors: Shin Serizawa, Tsunenori Yanagisawa, Kazuhiko Inoue, Masatoshi Iji, Yohei Kabashima, Kazue Ueda, Hiroo Kamikawa, Norio Fukawa