Patents by Inventor Hiroyoshi Nakajima

Hiroyoshi Nakajima 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: 20130253111
    Abstract: A propylene resin composition contains a specific propylene resin (A), a specific copolymer (B), an inorganic filler (C), a fatty acid amide (D), and carbon black (E), wherein the propylene resin (A) has a content of 52% to 72% by weight, the copolymer (B) has a content of 10% to 20% by weight, and the inorganic filler (C) has a content of 18% to 28% by weight. The total of weights of the propylene resin (A), the copolymer (B) of ethylene and an ?-olefin having not less than 4 carbons, and the inorganic filler (C) is taken as 100% by weight. The fatty acid amide (D) is contained at 0.2 to 0.7 parts by weight, and the carbon black (E) is contained at 0.8 to 2.2 parts by weight, relative to 100 parts by weight of the total of the weights of (A), (B) and (C).
    Type: Application
    Filed: March 21, 2013
    Publication date: September 26, 2013
    Applicants: Toyota Jidosha Kabushiki Kaisha, Sumitomo Chemical Company, Limited
    Inventors: Hiroyoshi NAKAJIMA, Toshio WATANABE, Shuji NAKAGAWA
  • Patent number: 8497497
    Abstract: Disclosed is an organic electroluminescent element having an element structure that can reduce damage to an organic layer during electrode formation and can facilitate the injection of charges from the electrode into the organic layer. The organic electroluminescent element includes an anode, a cathode, and an organic layer held between the anode and the cathode. The organic layer contains a luminescent material. The organic electroluminescent element further includes a transparent protective layer provided between the anode or the cathode and the organic layer. The transparent protective layer contains a bipolar charge transport organic compound and an electron-accepting compound. The transparent protective layer is formed in a period between after the formation of the organic layer and before the formation of the anode or the cathode on the organic layer.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: July 30, 2013
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroyoshi Nakajima, Masaya Shimogawara, Yasuhiro Iizumi
  • Publication number: 20120293170
    Abstract: Provided is a magnetic field detection device and a current sensor capable of increasing the degree of freedom in selecting the type of the magnetic field detection element. A magnetic field detection device 1 includes a conductor 3 that generates a magnetic field; a C core 2 provided so as to surround the conductor 3; and a magnetic field detection element 4 that detects a magnetic field. The C core 2 has a gap G1, and the magnetic field detection element 4 is disposed at a position where the magnetic field generated from the conductor 3 can be detected, the position being outside the gap G1. Since the direction of the magnetic flux varies outside of the gap G1 from place to place, the direction of the magnetic flux that passes through the magnetic field detection element 4 can be arbitrarily selected by arbitrarily selecting the installation location of the magnetic field detection element 4. Therefore, the degree of freedom in selecting the type of the magnetic field detection element 4 is increased.
    Type: Application
    Filed: December 28, 2010
    Publication date: November 22, 2012
    Inventors: Hiroyoshi Nakajima, Takakazu Imai, Takuya Daigo, Reiji Okuno, Junya Fukuda
  • Publication number: 20120245296
    Abstract: Disclosed is a method for producing a modified propylene polymer that exhibits low flowability and also exhibits little fluctuation in melt flow rate compared with the melt flow rate of the propylene polymer before modification, the method involving a heat treatment step of subjecting a mixture comprising 100 parts by weight of a propylene polymer (A), from 0.1 to 50 parts by weight of an ethylenically unsaturated bond-containing compound (B), and from 0.01 to 20 parts by weight of an organic peroxide (C) whose decomposition temperature at which the half-life thereof becomes 1 minute is lower than 120° C. to heat treatment by using an extruder at a temperature lower than the decomposition temperature of the organic peroxide (C) at which the half-life thereof becomes 1 minute.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroyoshi NAKAJIMA, Mitsuyoshi SHIMANO
  • Publication number: 20120245302
    Abstract: Disclosed is a method for producing a modified propylene polymer excellent in the balance between melt tension and flowability, the method involving a heat treatment step of subjecting a mixture comprising 100 parts by weight of a propylene polymer (A) and from 0.01 to 20 parts by weight of an organic peroxide (B) whose decomposition temperature at which the half-life thereof becomes 1 minute is lower than 120° C. to heat treatment by using an extruder at a temperature lower than the decomposition temperature of the organic peroxide (B) at which the half-life thereof becomes 1 minute.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroyoshi NAKAJIMA, Mitsuyoshi SHIMANO
  • Publication number: 20120245297
    Abstract: Disclosed is a modified propylene polymer excellent in the balance between melt tension and flowability, the modified propylene polymer being obtainable by reacting 100 parts by weight of a propylene polymers (A), from 0.1 to 50 parts by weight of an ethylenically unsaturated bond-containing compounds (B), and from 0.01 to 20 parts by weight of an organic peroxide (C), wherein a melt flow rate measured at 230° C. under a load of 2.16 kg and a melt tension measured at 190° C. satisfy the following formula (1): MT>9×MFR(?0.9)??(1).
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroyoshi NAKAJIMA, Mitsuyoshi SHIMANO
  • Patent number: 7956602
    Abstract: To provide a tilt angle sensor that is capable of detecting acceleration, a tilt angle, and the like of a device to which the tilt sensor angle is mounted, and also capable of reducing the size and the cost with a simple structure. The tilt angle sensor comprises: a spring member having a fixed end a free end that has a flexibility to be bent at least in one direction; a magnetic field generating device for generating a magnetic field, which is mounted at the free end of the spring member; a magnetic field detecting device provided by facing the magnetic field generating device for detecting a direction of the magnetic field generated by the magnetic field generating device; and a damping device for giving a damping force to a bending action of the spring member.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: June 7, 2011
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Tamon Kasajima, Hiroyoshi Nakajima, Yong Jun Dong, Fu Yu
  • Publication number: 20110073846
    Abstract: Disclosed is an organic electroluminescent element having an element structure that can reduce damage to an organic layer during electrode formation and can facilitate the injection of charges from the electrode into the organic layer. The organic electroluminescent element includes an anode, a cathode, and an organic layer held between the anode and the cathode. The organic layer contains a luminescent material. The organic electroluminescent element further includes a transparent protective layer provided between the anode or the cathode and the organic layer. The transparent protective layer contains a bipolar charge transport organic compound and an electron-accepting compound. The transparent protective layer is formed in a period between after the formation of the organic layer and before the formation of the anode or the cathode on the organic layer.
    Type: Application
    Filed: September 16, 2010
    Publication date: March 31, 2011
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroyoshi NAKAJIMA, Masaya Shimogawara, Yasuhiro Iizumi
  • Publication number: 20110039965
    Abstract: There is a resin composition containing a propylene polymer (A), an ethylene-?-olefin copolymer (B), and organic polymer beads (C), wherein the proportion of the amount of the propylene polymer (A) and the proportion of the amount of the ethylene-?-olefin copolymer (B) relative to the sum total of the amounts of the propylene polymer (A) and the ethylene-?-olefin copolymer (B) are 40 to 95% by mass and 5 to 60% by mass, respectively, the amount of the organic polymer beads (C) for 100 parts by weight in total of the propylene polymer (A) and the ethylene-?-olefin copolymer (B) is 0.1 to 20 parts by weight, and the density of the ethylene-?-olefin copolymer (B) is 0.85 to 0.89 g/cm3.
    Type: Application
    Filed: October 30, 2008
    Publication date: February 17, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroyoshi Nakajima, Takashi Fuujimoto
  • Publication number: 20100298456
    Abstract: There is provided a polypropylene resin composition comprising a propylene polymer (A) containing 0 to 70% by mass of a propylene homopolymer (A-1) and 30 to 100% by mass of a propylene-ethylene block copolymer (A-2) defined below, an ethylene-?-olefin copolymer (B) defined below, and an inorganic filler (C), wherein the proportion of the amount of the (A), the proportion of the amount of (B), and the proportion of the amount of (C) relative to the total amount of the (A), the (B) and the (C) are 40 to 94% by mass, 5 to 30% by mass, and 1 to 30% by mass, respectively, the propylene-ethylene block copolymer (A-2) is a mixture of a propylene homopolymer component and a propylene-ethylene random copolymer component, wherein the intrinsic viscosity, as measured in Tetralin of 135° C., of the propylene-ethylene random copolymer component is within the range of 2.0 to 8.
    Type: Application
    Filed: October 30, 2008
    Publication date: November 25, 2010
    Inventors: Hiroyoshi Nakajima, Yoshitaka Kobayashi, Takashi Fujimoto
  • Patent number: 7812530
    Abstract: The present invention provides a flexible substrate, which has solvent resistance, a high level of gas barrier properties, a high level of flexibility, high heat resistance, and a high level of transparency, and is suitable, for example, for use in a wet coating process of an organic device material, and an organic device using the same. The flexible substrate comprises a metal oxide polymer-containing layer and a three-dimensionally crosslinked polymer layer stacked in that order on at least one side of a very thin glass. The metal oxide polymer is a silicon oxide polymer, and the metal oxide polymer-containing layer underlying the three-dimensionally crosslinked polymer layer is neither swollen nor dissolved in an aromatic organic solvent.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: October 12, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shinichi Handa, Toru Miyake, Hiroyoshi Nakajima
  • Patent number: 7795353
    Abstract: Disclosed is a method for producing a modified propylene polymer, the method comprising heating a mixture of 100 parts by weight of a propylene polymer (A) defined below and from 0.1 to 50 parts by weight of an ethylenically unsaturated bond-containing monomer (B) in the presence of from 0.01 to 20 parts by weight of an organic peroxide (C); propylene polymer (A) being a propylene polymer composed of from 0.5 to 90% by weight of a propylene polymer component (A1) having an intrinsic viscosity [?], as measured in tetralin at 135° C., of from 5 dl/g to 15 dl/g and from 10 to 99.5% by weight of a propylene polymer component (A2) having an intrinsic viscosity [?], as measured in tetralin at 135° C., of not less than 0.1 dl/g but less than 5 dl/g.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: September 14, 2010
    Assignee: Sumitomo Chemical Company Limited
    Inventors: Hiroyoshi Nakajima, Shuichi Kimata, Susumu Kanzaki
  • Publication number: 20090326123
    Abstract: A polypropylene resin composition is provided which contains 50 to 90% by weight of a propylene polymer (A) selected from the group consisting of a propylene homopolymer (A-1) and a propylene-ethylene copolymer (A-2), 5 to 20% by weight of a propylene-ethylene-?-olefin copolymer (B) given below and 5 to 30% by weight of an ethylene-?-olefin copolymer (C) given below, wherein the composition has a melt index, measured at 230° C. under a load of 2.16 kg, of greater than 40 g/10 minutes but not greater than 200 g/10 minutes, propylene-ethylene-?-olefin copolymer (B): a copolymer composed of 5 to 99 mol % of propylene units, 60 mol % or less of ethylene units and 1 to 35 mol % of ?-olefin units, wherein the ?-olefin has 4 to 20 carbon atoms, the copolymer has a molecular weight distribution of 1 to 4, an intrinsic viscosity of 0.5 to 10 dl/g and a heat of fusion of 30 J/g or less, ethylene-?-olefin copolymer (C): a copolymer of ethylene and ?-olefin having a density of 0.85 to 0.
    Type: Application
    Filed: December 26, 2006
    Publication date: December 31, 2009
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroyoshi Nakajima, Takashi Fujimoto
  • Publication number: 20090195243
    Abstract: To provide a tilt angle sensor that is capable of detecting acceleration, a tilt angle, and the like of a device to which the tilt sensor angle is mounted, and also capable of reducing the size and the cost with a simple structure. The tilt angle sensor comprises: a spring member having a fixed end a free end that has a flexibility to be bent at least in one direction; a magnetic field generating device for generating a magnetic field, which is mounted at the free end of the spring member; a magnetic field detecting device provided by facing the magnetic field generating device for detecting a direction of the magnetic field generated by the magnetic field generating device; and a damping device for giving a damping force to a bending action of the spring member.
    Type: Application
    Filed: April 2, 2008
    Publication date: August 6, 2009
    Applicant: SAE MAGNETICS (H.K) LTD.
    Inventors: Tamon KASAJIMA, Hiroyoshi NAKAJIMA, Yong Jun DONG, Fu YU
  • Patent number: 7542242
    Abstract: A suspension includes a flexure constituted by a metal plate member, for supporting a head slider provided with at least one head element, a load beam provided with a top end section and constituted by a metal plate member, for supporting the flexure at the top end section, and an individual FPC member attached to the flexure and the load beam and provided with trace conductors to be electrically connected to the at least one head element of the head slider. The FPC member includes a plurality of via holes provided with metal fillers filled therein, the metal fillers in the respective via holes are welded to the flexure and/or the load beam, and the FPC member is fixed to the flexure and/or the load beam at least by means of the welding.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: June 2, 2009
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Masashi Shiraishi, Hiroyoshi Nakajima, Ichiro Yagi
  • Patent number: 7446970
    Abstract: To realize stable reading/writing of data by making a positioning control of a magnetic head slider highly accurate. There are provided a magnetic head assembly including: a magnetic head slider for reading/writing of data with respect to a rotating magnetic disk; a suspension for supporting the magnetic head slider; and an air flow regulating device for regulating the air flow amount flown in between the magnetic disk and the magnetic head slider along with the rotation of the magnetic disk.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: November 4, 2008
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Hiroyoshi Nakajima, Masashi Shiraishi
  • Publication number: 20080249225
    Abstract: A polypropylene resin composition is disclosed which contains a propylene polymer (A) selected from the group consisting of propylene homopolymers (A-1) and propylene-ethylene block copolymers (A-2) which are propylene-ethylene block copolymers each of which is composed of a propylene homopolymer component and a propylene-ethylene random copolymer component and has an intrinsic viscosity of from 2 to 8 dl/g, an ethylene-?-olefin copolymer (B) defined below, the amount of the polymer (A) and the amount of the copolymer (B) each being based on the combined amount of the polymer (A) and the copolymer (B) which is an ethylene-?-olefin copolymer having a melt index, as measured at 190° C., of from 1 to 40 g/10 min, and a petroleum resin (C-1) or a terpene resin (C-2) having a glass transition temperature of 90° C. or lower.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 9, 2008
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroyoshi NAKAJIMA, Takashi FUJIMOTO
  • Patent number: 7417087
    Abstract: A resin composition, wherein the composition contains a thermoplastic resin and an aluminum-containing inorganic compound; the thermoplastic resin and the aluminum-containing inorganic compound form a parent phase and a dispersed phase, respectively; and the following inequality (1) 0<d??0.0997 ?+2.97??(1) is satisfied, in which a wall-to-wall distance of the dispersed phases and a content of the aluminum-containing inorganic compound based on the weight of the resin composition are taken as d (?m) and ? (% by weight), respectively; is produced by melt-blending a thermoplastic resin with an aluminum-containing inorganic compound powder having a BET specific surface area of from 30 to 500 m2/g, a maximum particle diameter of not more than 20 ?m, and a pore volume of pores having a radius of from 50 to 1000 nm measured by a mercury porosimetry of not less than 0.3 cm3/g.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: August 26, 2008
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Satoru Nippa, Hiroyoshi Nakajima, Kenji Atarashi
  • Publication number: 20080033076
    Abstract: Disclosed is an olefin polymer composition powder having excellent powder properties which is useful as a raw material for a modified olefin polymer having high modification degree. Also disclosed is a modified olefin polymer having high modification degree obtained from such an olefin polymer composition powder. Specifically disclosed is an olefin polymer composition powder containing 100 parts by weight of an olefin polymer powder (A), 0.1-20 parts by weight of an ethylenically unsaturated bond-containing monomer (B), 0.1-20 parts by weight of an organic peroxide (C) and 0.1-20 parts by weight of an organic porous powder (D). Also specifically disclosed is a modified olefin polymer obtained by heating such a powder.
    Type: Application
    Filed: November 10, 2005
    Publication date: February 7, 2008
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Hiroyoshi Nakajima, Shuichi Kimata
  • Publication number: 20070093611
    Abstract: A propylene-based resin is disclosed which has at least one kind of functional groups selected from the group (i) consisting of a hydroxyl group, an amino group and a mercapto group, and at least one kind of functional groups selected from the group (ii) consisting of a carboxyl group, an acid anhydride group, epoxy group and an isocyanate group.
    Type: Application
    Filed: October 19, 2006
    Publication date: April 26, 2007
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Hiroyoshi Nakajima, Katsuhisa Kitano, Makoto Satoh