Patents by Inventor Naoyuki Kitamura

Naoyuki Kitamura 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: 20200347239
    Abstract: The purpose of the present invention is to provide a plasma spray material which is capable of forming a hydroxyapatite film that exhibits high adhesion strength with respect to substrates such as metal substrates. When used as a plasma spray material, hydroxyapatite powder having a modal diameter of 550-1000 nm in a pore diameter of at most 5000 nm as measured by a mercury intrusion method is capable of forming a hydroxyapatite film that exhibits high adhesion strength with respect to substrates such as metal substrates.
    Type: Application
    Filed: December 6, 2018
    Publication date: November 5, 2020
    Inventors: Naoyuki KITAMURA, Akihito BANDO, Yuta TSUMURA, Shota MINAMI
  • Patent number: 10531684
    Abstract: Provided is a powder containing ferric pyrophosphate that affords high iron absorbability, as a main component of an oral iron preparation. The present invention relates to a composite powder containing ferric pyrophosphate, which is a powder containing ferric pyrophosphate and a sodium component, wherein (1) the content of ferric pyrophosphate is 95 wt % or higher, and (2) a (Fe+Na)/P molar ratio is 0.8 to 1.0.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: January 14, 2020
    Assignee: TOMITA PHARMACEUTICAL CO., LTD.
    Inventors: Sadayoshi Watanabe, Yukinori Konishi, Shota Minami, Akihito Bando, Naoyuki Kitamura
  • Publication number: 20180249750
    Abstract: Provided is a powder containing ferric pyrophosphate that affords high iron absorbability, as a main component of an oral iron preparation. The present invention relates to a composite powder containing ferric pyrophosphate, which is a powder containing ferric pyrophosphate and a sodium component, wherein (1) the content of ferric pyrophosphate is 95 wt % or higher, and (2) a (Fe+Na)/P molar ratio is 0.8 to 1.0.
    Type: Application
    Filed: December 10, 2015
    Publication date: September 6, 2018
    Inventors: SADAYOSHI WATANABE, YUKINORI KONISHI, SHOTA MINAMI, AKIHITO BANDO, NAOYUKI KITAMURA
  • Patent number: 8404604
    Abstract: A P2O5—BaO—ZnO—Nb2O5 type optical glass contains 25-50 wt. % P2O5, 15-35 wt. % BaO, 1-25 wt. ZnO, and 3-10 wt. % Nb2O5. The optical glass has a high refractive index (particularly preferably the refractive index nd of 1.6 or more), low dispersion (an Abbe number ?d of 42 or more), a low deformation point, and improved resistance to devitrification upon molding, and is suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: March 26, 2013
    Assignees: Nihon Yamamura Glass Co., Ltd., National Institute of Advanced Industrial Science and Technology
    Inventors: Tatsuo Hidaka, Junichi Nakamura, Yoshitaka Mayumi, Hidekazu Hashima, Kohei Fukumi, Naoyuki Kitamura, Junji Nishii
  • Patent number: 8298974
    Abstract: An optical glass having a high refractive index (particularly preferably a refractive index of 1.6 or more), low dispersion (an Abbe number of 45 or more), a low deformation point, and improved resistance to devitrification upon molding, and suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure is provided. The optical glass contains 1.0-4.5 wt. % SiO2, 30.5-50.0 wt. % B2O3, 1.1-8.0 wt. % Li2O, 10.1-19.5 wt. % BaO, 15.5-30.0 wt. % ZnO, 3.0-15.0 wt. % Y2O3, and 10.0-19.5 wt. % La2O3.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: October 30, 2012
    Assignees: Nihon Yamamura Glass Co, Ltd., National Institute of Advanced Industrial Science and Technology
    Inventors: Tatsuo Hidaka, Junichi Nakamura, Takuro Ikeda, Hidekazu Hashima, Kohei Fukumi, Naoyuki Kitamura, Junji Nishii
  • Publication number: 20120088109
    Abstract: A linear polyimide is produced from mellophanic dianhydride, diamine (NH2-A-NH2), and a monofunctional acid anhydride and contains a repeating unit represented by the following general formula (3): wherein A represents a divalent aromatic diamine residue or aliphatic diamine residue, B represents a monofunctional acid anhydride residue, and n represents a degree of polymerization.
    Type: Application
    Filed: May 26, 2009
    Publication date: April 12, 2012
    Applicant: JFE CHEMICAL CORPORATION
    Inventors: Masatoshi Hasegawa, Naoyuki Kitamura
  • Publication number: 20110172078
    Abstract: An optical glass having a high refractive index (particularly preferably a refractive index of 1.6 or more), low dispersion (an Abbe number of 45 or more), a low deformation point, and improved resistance to devitrification upon molding, and suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure is provided. The optical glass contains 1.0-4.5 wt. % SiO2, 30.5-50.0 wt. % B2O3, 1.1-8.0 wt. % Li2O, 10.1-19.5 wt. % BaO, 15.5-30.0 wt. % ZnO, 3.0-15.0 wt. % Y2O3, and 10.0-19.5 wt. % La2O3.
    Type: Application
    Filed: September 25, 2009
    Publication date: July 14, 2011
    Inventors: Tatsuo Hidaka, Junichi Nakamura, Takuro Ikeda, Hidekazu Hashima, Kohei Fukumi, Naoyuki Kitamura, Junji Nishii
  • Publication number: 20100317504
    Abstract: A P2O5—BaO—ZnO—Nb2O5 type optical glass contains 25-50 wt. % P2O5, 15-35 wt. % BaO, 1-25 wt. ZnO, and 3-10 wt. % Nb2O5. The optical glass has a high refractive index (particularly preferably the refractive index nd of 1.6 or more), low dispersion (an Abbe number ?d of 42 or more), a low deformation point, and improved resistance to devitrification upon molding, and is suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure.
    Type: Application
    Filed: February 9, 2009
    Publication date: December 16, 2010
    Applicant: National Institute of Advanced Industrial Sciences and Technology
    Inventors: Tatsuo Hidaka, Junichi Nakamura, Yoshitaka Mayumi, Hidekazu Hashima, Kohei Fukumi, Naoyuki Kitamura, Junji Nishii
  • Publication number: 20100147564
    Abstract: Disclosed is a linear polyimide precursor having an intrinsic viscosity of not less than 0.5 dL/g and composed of a repeating unit represented by at least one formula selected from the group consisting of the general formula (1) below and the general formula (2) below. In the general formulae (1) and (2), X represents a divalent aromatic group other than a residue of 1,4-bis(4-aminophenoxy)benzene and a residue of bis(4-amino-3-methylphenyl)methane or an aliphatic group. Since this linear polyimide precursor has high glass transition temperature and high toughness, while exhibiting excellent solubility and thermoplasticity, it is suitably used as a raw material for an asymmetric polyimide which is useful as an adhesive resin for flexible printed circuits (FPC) or the like.
    Type: Application
    Filed: May 8, 2008
    Publication date: June 17, 2010
    Applicant: JFE CHEMICAL CORPORATION
    Inventors: Masatoshi Hasegawa, Naoyuki Kitamura
  • Publication number: 20100056824
    Abstract: A method for preparation of 1,2,3,4-benzenetetracarboxylic acid includes oxidizing 1,2,3,4,5,6,7,8-octahydrophenanthrene with potassium permanganate.
    Type: Application
    Filed: March 25, 2008
    Publication date: March 4, 2010
    Applicant: JFE CHEMICAL CORPORATION
    Inventor: Naoyuki Kitamura
  • Patent number: 7138484
    Abstract: A method for producing a polymerized hydrocarbon includes a step of a dehalogenation of a halogenated hydrocarbon with a magnesium-diene complex. Low-molecular-weight compounds, such as dimers or trimers of hydrocarbon units, oligomers of hydrocarbon units, or polymers of hydrocarbon units can be produced by this method while generating significantly less odor.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: November 21, 2006
    Assignee: JFE Chemical Corporation
    Inventors: Takakazu Yamamoto, Naoyuki Kitamura, Hiroki Fukumoto
  • Patent number: 7059036
    Abstract: An electronic component mounting apparatus which employs a first air feed device connected to an air passage at one end part of a spline shaft, and a second air feed device connected to the air passage in the vicinity of the other end of the spline shaft. The first and second air feeds function to supply air to the air passage to return an interior thereof to atmospheric pressure. The time required to return the vacuum pressure in the air passage to atmospheric pressure can be shortened by the use of the two separate air feeds.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: June 13, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Osamu Okuda, Yoshihiro Yoshida, Akira Kabeshita, Satoshi Shida, Naoyuki Kitamura
  • Patent number: 6977313
    Abstract: A process is provided for the production of 2,7-dibromofluorenone. According to the process, a 2,7-dibromofluorene-contianing raw material is oxidized with molecular oxygen in the presence of a phase transfer catalyst such as a quaternary ammonium salt in a heterogeneous, mixed solvent of an aqueous solution of a caustic alkali and a water-insoluble organic solvent. Crude crystals of 2,7-dibromofluorenone, which have been obtained by the oxidization, can be purified by recrystallization to recover 2,7-dibromofluorenone as crystals having a purity of at least 99 wt. %.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: December 20, 2005
    Assignee: JFE Chemical Corporation
    Inventors: Youko Sugio, Naoyuki Kitamura, Hiroaki Mori, Tetsuo Hachiya
  • Publication number: 20050183263
    Abstract: An electronic component mounting apparatus which employs a first air feed device connected to an air passage at one end part of a spline shaft, and a second air feed device connected to the air passage in the vicinity of the other end of the spline shaft. The first and second air feeds function to supply air to the air passage to return an interior thereof to atmospheric pressure. The time required to return the vacuum pressure in the air passage to atmospheric pressure can be shortened by the use of the two separate air feeds.
    Type: Application
    Filed: April 20, 2005
    Publication date: August 25, 2005
    Inventors: Osamu Okuda, Yoshihiro Yoshida, Akira Kabeshita, Satoshi Shida, Naoyuki Kitamura
  • Patent number: 6895662
    Abstract: An electronic component mounting apparatus which employs a first air feed device connected to an air passage at one end part of a spline shaft, and a second air feed device connected to the air passage in the vicinity of the other end of the spline shaft. The first and second air feeds function to supply air to the air passage to return an interior thereof to atmospheric pressure. The time required to return the vacuum pressure in the air passage to atmospheric pressure can be shortened by the use of the two separate air feeds.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: May 24, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Osamu Okuda, Yoshihiro Yoshida, Akira Kabeshita, Satoshi Shida, Naoyuki Kitamura
  • Publication number: 20050075478
    Abstract: A method for producing a polymerized hydrocarbon includes a step of a dehalogenation of a halogenated hydrocarbon with a magnesium-diene complex. Low-molecular-weight compounds, such as dimers or trimers of hydrocarbon units, oligomers of hydrocarbon units, or polymers of hydrocarbon units can be produced by this method while generating significantly less odor.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 7, 2005
    Applicant: JFE CHEMICAL CORPORATION
    Inventors: Takakazu Yamamoto, Naoyuki Kitamura, Hiroki Fukumoto
  • Patent number: 6876761
    Abstract: A calibration jig for a component recognition device and a component recognition calibration method using the jig which can stabilize the mounting accuracy of a component to a to-be-mounted object and improve amount quality. An opening is formed at a to-be-picked up face of the calibration jig. A predetermined position of the calibration jig is recognized on the basis of the contrast between the picked-up face and the opening. The position of the calibration jig can be recognized with higher accuracy, so that a resolution of the component recognition device, etc. can be obtained with a higher degree of accuracy. Mount accuracy of the component to the object is thus stabilized and mount quality is improved.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: April 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Osamu Okuda, Yoshihiro Yoshida, Atsushi Tanabe, Akira Kabeshita, Naoyuki Kitamura, Kazuo Mori
  • Patent number: 6858764
    Abstract: A method for preparing bromofluorenes includes a step of dispersing a compound selected from the group consisting of fluorene, fluorenone, and derivatives of fluorene and fluorenone in water to prepare a disperse system. Bromination is initiated by adding bromine Br2 into the disperse system. Thus, bromofluorenes can be efficiently and economically prepared without using any environmentally harmful organic solvent requiring a high cost to dispose of.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: February 22, 2005
    Assignee: JFE Chemical Corporation
    Inventors: Tetsuo Hachiya, Naoyuki Kitamura, Hiroaki Mori, Toshiyuki Yasuda
  • Patent number: D493808
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: August 3, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yosuhiko Tanaka, Naoyuki Kitamura, Nobuhiro Nakai, Hiroshi Haji, Maiko Matsuo
  • Patent number: D494988
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: August 24, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasuhiko Tanaka, Naoyuki Kitamura, Nobuhiro Nakai, Hiroshi Haji, Maiko Matsuo