Patents by Inventor Katsunori Iwasaki

Katsunori Iwasaki 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: 8409498
    Abstract: A sputter target material which is of a sintered material, wherein the sputter target material consists of 0.5 to 50 atomic % in total of at least one metal element (M) selected from the group of Ti, Zr, V, Nb and Cr, and the balance of Mo and unavoidable impurities, and has a microstructure seen at a perpendicular cross section to a sputtering surface, in which microstructure oxide particles exist near a boundary of each island of the metal element (M), and wherein the maximum area of the island, which is defined by connecting the oxide particles with linear lines so as to form a closed zone, is not more than 1.0 mm2.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: April 2, 2013
    Assignee: Hitachi Metals, Ltd.
    Inventors: Keisuke Inoue, Tsuyoshi Fukui, Shigeru Taniguchi, Norio Uemura, Katsunori Iwasaki, Kazuya Saitoh
  • Patent number: 8242302
    Abstract: It is intended to provide a drug which is efficacious in treating and preventing diseases wherein ischemia or an inflammatory substance associated with ischemia participates in the onset or worsening thereof. Because of containing as the active ingredient a substance selected from among farnesol, a farnesol derivative, a tocopherol derivative, a tocotrienol derivative, pharmacologically acceptable salts thereof and solvates thereof, the above-described inhibitor of ischemic disorders can exert therapeutic and preventive effects on diseases wherein ischemia or an inflammatory substance associated with ischemia participates in the onset or worsening thereof (for example, brain infarction, brain edema, cardiac infarction, etc.) not only by the administration in the acute ischemic stage but also by the therapeutic administration in subacute and/or chronic stages after ischemia-reperfusion. It is also intended to provide a farnesol carboxylic acid ester derivative and a method of producing the same.
    Type: Grant
    Filed: September 1, 2008
    Date of Patent: August 14, 2012
    Assignee: Fukuoka University
    Inventors: Jiro Takata, Kenichi Mishima, Manabu Nakashima, Katsunori Iwasaki, Kazuhisa Matsunaga, Yoshiharu Karube, Michihiro Fujiwara
  • Publication number: 20100217006
    Abstract: It is intended to provide a drug which is efficacious in treating and preventing diseases wherein ischemia or an inflammatory substance associated with ischemia participates in the onset or worsening thereof. Because of containing as the active ingredient a substance selected from among farnesol, a farnesol derivative, a tocopherol derivative, a tocotrienol derivative, pharmacologically acceptable salts thereof and solvates thereof, the above-described inhibitor of ischemic disorders can exert therapeutic and preventive effects on diseases wherein ischemia or an inflammatory substance associated with ischemia participates in the onset or worsening thereof (for example, brain infarction, brain edema, cardiac infarction, etc.) not only by the administration in the acute ischemic stage but also by the therapeutic administration in subacute and/or chronic stages after ischemia-reperfusion. It is also intended to provide a farnesol carboxylic acid ester derivative and a method of producing the same.
    Type: Application
    Filed: September 1, 2008
    Publication date: August 26, 2010
    Applicant: FUKUOKA UNIVERSITY
    Inventors: Jiro Takata, Kenichi Mishima, Manabu Nakashima, Katsunori Iwasaki, Kazuhisa Matsunaga, Yoshiharu Karube, Michihiro Fujiwara
  • Publication number: 20090238712
    Abstract: A sputter target material which is of a sintered material, wherein the sputter target material consists of 0.5 to 50 atomic % in total of at least one metal element (M) selected from the group of Ti, Zr, V, Nb and Cr, and the balance of Mo and unavoidable impurities, and has a microstructure seen at a perpendicular cross section to a sputtering surface, in which microstructure oxide particles exist near a boundary of each island of the metal element (M), and wherein the maximum area of the island, which is defined by connecting the oxide particles with linear lines so as to form a closed zone, is not more than 1.0 mm2.
    Type: Application
    Filed: June 5, 2009
    Publication date: September 24, 2009
    Applicant: HITACHI METALS, LTD.
    Inventors: Keisuke Inoue, Tsuyoshi Fukui, Shigeru Taniguchi, Norio Uemura, Katsunori Iwasaki, Kazuya Saitoh
  • Publication number: 20060118413
    Abstract: A sputtering target is provided, including a target material and a backing plate that are bonded with a strong adhesion at a reduced cost. The method for bonding the target material and the backing plate does not use a special soldering material, and is therefore cheaper and more reliable. The target includes an inorganic target material and a backing plate that are bonded with a soldering material between them. At least one of the target material and the backing plate is coated with a coupling agent of a semi-metal oxide or a metal oxide.
    Type: Application
    Filed: January 27, 2006
    Publication date: June 8, 2006
    Inventors: Shigeru Taniguchi, Katsunori Iwasaki
  • Publication number: 20050230244
    Abstract: A sputter target material which is of a sintered material, wherein the sputter target material consists of 0.5 to 50 atomic % in total of at least one metal element (M) selected from the group of Ti, Zr, V, Nb and Cr, and the balance of Mo and unavoidable impurities, and has a microstructure seen at a perpendicular cross section to a sputtering surface, in which microstructure oxide particles exist near a boundary of each island of the metal element (M), and wherein the maximum area of the island, which is defined by connecting the oxide particles with linear lines so as to form a closed zone, is not more than 1.0 mm2.
    Type: Application
    Filed: March 3, 2005
    Publication date: October 20, 2005
    Inventors: Keisuke Inoue, Tsuyoshi Fukui, Shigeru Taniguchi, Norio Uemura, Katsunori Iwasaki, Kazuya Saitoh
  • Publication number: 20050191202
    Abstract: Disclosed is a method of producing a target material of a Mo alloy, which includes the steps of (a) preparing a green compact by compressing a raw material powder blend consisting of a Mo powder having an average particle size of not more than 20 ?m and a transition metal powder having an average particle size of not more than 500 ?m; (b) pulverizing the green compact to produce a secondary powder having an average particle size of from not less than an average particle size of the raw material powder blend to not more than 10 mm; (c) filling the secondary powder into a container for pressurizing; and (d) subjecting the secondary powder with the container for pressurizing to sintering under pressure thereby obtaining a sintered body of the target material.
    Type: Application
    Filed: February 25, 2005
    Publication date: September 1, 2005
    Inventors: Katsunori Iwasaki, Keisuke Inoue, Norio Uemura
  • Publication number: 20040118679
    Abstract: A sputtering target is provided, including a target material and a backing plate that are bonded with a strong adhesion at a reduced cost. The method for bonding the target material and the backing plate does not use a special soldering material, and is therefore cheaper and more reliable. The target includes an inorganic target material and a backing plate that are bonded with a soldering material between them. At least one of the target material and the backing plate is coated with a coupling agent of a semi-metal oxide or a metal oxide.
    Type: Application
    Filed: July 23, 2003
    Publication date: June 24, 2004
    Inventors: Shigeru Taniguchi, Katsunori Iwasaki
  • Patent number: 6599933
    Abstract: The object of the present invention is to provide a tocotrienol derivative which is highly water-soluble and shows high bioavailability in the living body and &ggr;-CEHC delivering agent. (A tocotrienolcarboxylic acid ester derivative represented by the general formula (I). (wherein R2 means a carboxylic acid residue having a nitrogen substituent, and R1 and R3 mean a hydrogen atom or a methyl group.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: July 29, 2003
    Assignees: Kenko Corporation
    Inventors: Jiro Takata, Takeshi Fukushima, Kazuhiro Imai, Yoshiharu Karube, Kazuhisa Matsunaga, Michihiro Fujiwara, Akihiro Hattori, Ryoji Hidaka, Katsunori Iwasaki, Kenichi Mishima, Shizuko Kobayashi
  • Patent number: 6537463
    Abstract: A resin-bonded magnet composed substantially of (a) an R—T—N-based magnetic powder having a basic composition of R&agr;T100−&agr;−&bgr;N&bgr;, wherein R is at least one selected form the group consisting of rare earth elements including Y, T is Fe or Fe and Co, 5≦&agr;≦20, and 5≦&bgr;≦30, (b) a ferrite magnetic powder having a substantially magnetoplumbite-type crystal structure and a basic composition represented by (A1−xR′x) O[(Fe1−yMy)2O3] by atomic ratio, wherein A is Sr and/or Ba, R′ is at least one selected from the group consisting of rare earth elements including Y, La being indispensable, M is Co or Co and Zn, 0.01≦x<0.4, 0.005≦y≦0.04, and 5.0≦n≦6.4, and (c) a binder. The ferrite magnet powder is preferably an anisotropic, granulated powder or an anisotropic, sintered ferrite magnet powder.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: March 25, 2003
    Assignee: Hitachi Metals, Ltd.
    Inventors: Katsunori Iwasaki, Masahiro Tobise, Yasunobu Ogata, Mikio Shindo, Hiroshi Okajima
  • Publication number: 20030027857
    Abstract: The object of the present invention is to provide a tocotrienol derivative which is highly water-soluble and shows high bioavailability in the living body and &ggr;-CEHC delivering agent.
    Type: Application
    Filed: March 2, 2001
    Publication date: February 6, 2003
    Applicant: Jiro Takata
    Inventors: Jiro Takata, Takeshi Fukushima, Kazuhiro Imai, Yoshiharu Karube, Kazuhisa Matsunaga, Michihiro Fujiwara, Akihiro Hattori, Ryoji Hidaka, Katsunori Iwasaki, Kenichi Mishima, Shizuko Kobayashi
  • Patent number: 6423386
    Abstract: The magnet powder-resin compound particles substantially composed of rare earth magnet powder and a binder resin are in such a round shape that a ratio of the longitudinal size a to the transverse size b (a/b) is more than 1.00 and 3 or less, and that an average particle size defined by (a/b)/2 is 50-300 &mgr;m. They are produced by charging a mixture of rare earth magnet powder and a binder resin into an extruder equipped with nozzle orifices each having a diameter of 300 &mgr;m or less; extruding the mixture while blending under pressure though the nozzle orifices to form substantially cylindrical, fine pellets; and rounding the pellets by rotation.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: July 23, 2002
    Assignee: Hitachi Metals, Ltd.
    Inventors: Katsunori Iwasaki, Kazunori Tabaru
  • Publication number: 20020084001
    Abstract: A resin-bonded magnet composed substantially of (a) an R-T-N-based magnetic powder having a basic composition of R&agr;T100-&agr;-&bgr;N&bgr;, wherein R is at least one selected form the group consisting of rare earth elements including Y, T is Fe or Fe and Co, 5≦&agr;≦20, and 5≦&bgr;≦30, (b) a ferrite magnetic powder having a substantially magnetoplumbite-type crystal structure and a basic composition represented by (A1-xR′x)O[(Fe1-yMy)2O3] by atomic ratio, wherein A is Sr and/or Ba, R′ is at least one selected from the group consisting of rare earth elements including Y, La being indispensable, M is Co or Co and Zn, 0.01≦x≦0.4, 0.005≦y≦0.04, and 5.0≦n≦6.4, and (c) a binder. The ferrite magnet powder is preferably an anisotropic, granulated powder or an anisotropic, sintered ferrite magnet powder.
    Type: Application
    Filed: December 11, 2000
    Publication date: July 4, 2002
    Inventors: Katsunori Iwasaki, Masahiro Tobise, Yasunobu Ogata, Mikio Shindo, Hiroshi Okajima
  • Publication number: 20010051246
    Abstract: The magnet powder-resin compound particles substantially composed of rare earth magnet powder and a binder resin are in such a round shape that a ratio of the longitudinal size a to the transverse size b (a/b) is more than 1.00 and 3 or less, and that an average particle size defined by (a/b)/2 is 50-300 &mgr;m. They are produced by charging a mixture of rare earth magnet powder and a binder resin into an extruder equipped with nozzle orifices each having a diameter of 300 &mgr;m or less; extruding the mixture while blending under pressure though the nozzle orifices to form substantially cylindrical, fine pellets; and rounding the pellets by rotation.
    Type: Application
    Filed: April 6, 1999
    Publication date: December 13, 2001
    Inventors: KATSUNORI IWASAKI, KAZUNORI TABARU
  • Patent number: 5286308
    Abstract: A magnetically anistropic R-T-B magnet having crystal grains having aspect ratios of 2 or more and showing a substantially uniform maximum energy product distribution is produced by (a) rapidly quenching an alloy melt; (b) finely pulverizing the rapidly quenched alloy to provide magnetic powder; (c) mixing the magnetic powder with a carbon-containing additive; (d) coating the resulting mixture with a protective layer of a first lubricant such as BN substantially unreactive with the alloy components; (e) compressing it; (f) further coating the resulting compressed body with a second lubricant such as graphite or graphite+glass; and (g) further compressing it.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: February 15, 1994
    Assignee: Hitachi Metals Ltd.
    Inventors: Makoto Shinoda, Katsunori Iwasaki, Shigeho Tanigawa, Masaaki Tokunaga
  • Patent number: 5162063
    Abstract: A magnetically anisotropic R-T-B magnet having crystal grains having aspect ratios of 2 or more and showing a substantially uniform maximum energy product distribution is produced by (a) rapidly quenching an alloy melt; (b) finely pulverizing the rapidly quenched alloy to provide magnetic powder; (c) mixing the magnetic powder with a carbon-containing additive; (d) coating the resulting mixture with a protective layer of a first lubricant such as BN substantially unreactive with the alloy components; (e) compressing it; (f) further coating the resulting compressed body with a second lubricant such as graphite or graphite+glass; and (g) further compressing it.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: November 10, 1992
    Assignee: Hitachi Metals Ltd.
    Inventors: Makoto Shinoda, Katsunori Iwasaki, Shigeho Tanigawa, Masaaki Tokunaga
  • Patent number: 5125990
    Abstract: A magnetically anisotropic hot-worked magnet made of an R-T-B alloy containing a transition metal T as a main component, a rare earth element R including yttrium, and boron B; the magnet having the fine crystal grains having an average grain size of 0.02 -1.0 .mu.m, and having a carbon content of 0.8 weight % or less and an oxygen content of 0.5 weight % or less. The angular variance of orientation of the crystal grains is within 30.degree. from the C axes of the crystal grains when measured by X-ray. This magnet can be produced by mixing the magnet flakes with an additive composed of at least one organic compound having a boiling point of 50.degree. C. or higher.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: June 30, 1992
    Assignee: Hitachi Metals
    Inventors: Katsunori Iwasaki, Shigeho Tanigawa, Masaaki Tokunaga
  • Patent number: 5098486
    Abstract: Anisotropic not-worked permanent magnets are made from an R-T-B alloyed powder to which is added a combination internal lubricant including a carbon-based material such as graphite and a glass material such as glass from the B.sub.2 O.sub.3 -SiO.sub.2 -BiO.sub.3 glass system. The internal lubricant provides improved formability during the hot-working step, such as die-upsetting, and provides finished magnet products wherein the individual grains are more uniformly plastically deformed throughout the product.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: March 24, 1992
    Assignee: Hitachi Metals, Ltd.
    Inventors: Katsunori Iwasaki, Shigeho Tanigawa, Masaaki Tokunaga
  • Patent number: RE38042
    Abstract: A the magnetically anisotropic magnetic powder having an average particle size of 1-1000 &mgr;m and made from a magnetically anisotropic R-TM-B-Ga or R-TM-B-Ga-M alloy having an average crystal grain size of 0.01-0.5 &mgr;m, wherein R represents one or more rare earth elements including Y, TM represents Fe which may be partially substituted by Co, B boron, Ga gallium, and M one or more elements selected from the group consisting of Nb, W, V, Ta, Mo, Si, Al, Zr, Hf, P, C and Zn. This is useful for anisotropic resin-bonded magnet with high magnetic properties.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: March 25, 2003
    Assignee: Hitachi Metals, Ltd.
    Inventors: Minoru Endoh, Yasuto Nozawa, Katsunori Iwasaki, Shigeho Tanigawa, Masaaki Tokunaga
  • Patent number: RE40524
    Abstract: The magnet powder-resin compound particles substantially composed of rare earth magnet powder and a binder resin are in such a round shape that a ratio of the longitudinal size a to the transverse size b (a/b) is more than 1.00 and 3 or less, and that an average particle size defined by (a/b)/2 is 50-300 ?m. They are produced by charging a mixture of rare earth magnet powder and a binder resin into an extruder equipped with nozzle orifices each having a diameter of 300 ?m or less; extruding the mixture while blending under pressure though the nozzle orifices to form substantially cylindrical, fine pellets; and rounding the pellets by rotation.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: September 30, 2008
    Assignee: Hitachi Metals, Ltd.
    Inventors: Katsunori Iwasaki, Kazunori Tabaru