Patents by Inventor Toshiharu Nakagawa

Toshiharu Nakagawa 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: 10315928
    Abstract: A method for producing a barium titanate-based powder that includes mixing a titanium compound and a barium compound together with water and chlorine to prepare a slurry, and temporarily firing the mixture of the titanium compound and the barium compound which is contained in the slurry to provide a barium titanate-based powder. The chlorine in the slurry is in the form of chlorine ions in a ratio of 230 to 1100 wt ppm based on the amount of the barium titanate-based powder to be synthesized.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: June 11, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroko Ajichi, Toshiharu Nakagawa, Wenjun Wang, Sanae Nakae, Norikazu Tachibana
  • Publication number: 20160137523
    Abstract: A method for producing a barium titanate-based powder that includes mixing a titanium compound and a barium compound together with water and chlorine to prepare a slurry, and temporarily firing the mixture of the titanium compound and the barium compound which is contained in the slurry to provide a barium titanate-based powder. The chlorine in the slurry is in the form of chlorine ions in a ratio of 230 to 1100 wt ppm based on the amount of the barium titanate-based powder to be synthesized.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 19, 2016
    Inventors: HIROKO AJICHI, Toshiharu Nakagawa, Wenjun Wang, Sanae Nakae, Norikazu Tachibana
  • Patent number: 8771631
    Abstract: A method is provided which includes a reaction step of reacting at least titanium oxide, a calcium compound, and barium hydroxide in a slurry solution so as to produce a perovskite-type composite oxide. The perovskite-type composite oxide is represented by (Ba1-xCax)mTiO3, and x is within a range of 0<x?0.125. In addition, the method provides a perovskite-type composite oxide in which a water-soluble calcium compound is used as the calcium compound, and when the perovskite-type composite oxide is represented by (Ba1-xCax)mTiO3, x is within a range of 0<x?0.20.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: July 8, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toshiharu Nakagawa, Norikazu Tachibana, Yasunari Nakamura
  • Publication number: 20120216941
    Abstract: A method is provided which includes a reaction step of reacting at least titanium oxide, a calcium compound, and barium hydroxide in a slurry solution so as to produce a perovskite-type composite oxide. The perovskite-type composite oxide is represented by (Ba1-xCax)mTiO3, and x is within a range of 0<x?0.125. In addition, the method provides a perovskite-type composite oxide in which a water-soluble calcium compound is used as the calcium compound, and when the perovskite-type composite oxide is represented by (Ba1-xCax)mTiO3, x is within a range of 0<x?0.20.
    Type: Application
    Filed: February 22, 2012
    Publication date: August 30, 2012
    Inventors: TOSHIHARU NAKAGAWA, Norikazu Tachibana, Yasunari Nakamura
  • Patent number: 6007638
    Abstract: A detergent composition for cleaning the surface of a substrate prior to or after application of an organic or inorganic thin film thereon, comprises: (A) a compound selected from the compounds represented by the formula: R.sub.1 --O--(A.sub.1 O).sub.n --R.sub.2 (wherein R.sub.1 represents an alkyl or alkenyl group having 1 to 7 carbon atoms or a phenyl group; A.sub.1 represents an alkylene group having 2 to 4 carbon atoms; R.sub.2 represents an alkyl or alkenyl group having 1 to 6 carbon atoms or a hydrogen atom; and n is a numerical value ranging from 1 to 6); (B) a compound selected from at least one of those represented by the formulas: R.sub.3 --O--(A.sub.2 O).sub.m --H and R.sub.4 --O--(A.sub.3 O).sub.m --H (wherein R.sub.3 represents an alkylphenyl or alkenylphenyl group having 12 to 25 carbon atoms; A.sub.2 represents an alkylene group having 2 to 4 carbon atoms; R.sub.4 represents an alkyl or alkenyl group having 8 to 25 carbon atoms; A.sub.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: December 28, 1999
    Assignee: Lion Corporation
    Inventors: Akira Shinohara, Hirotoshi Ushiyama, Miwa Sugano, Naoaki Sakurai, Noriko Okoshi, Toshiharu Nakagawa
  • Patent number: 5055378
    Abstract: A solder resist composition contains a specified partially acrylated and/or methacrylated bisphenol A novolak epoxy resin component, and a specified partially acrylated and/or methacrylated cresol novolak and/or phenol novolak epoxy resin component. The composition further contain a photopolymerization initiator, a thermosetting agent, an inorganic filler, and an organic solvent. The composition may further include a silane or titanate coupling agent.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: October 8, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masataka Miyamura, Yusuke Wada, Toshiharu Nakagawa, Yuji Nakaizumi, Kazuhiro Takeda
  • Patent number: 4893658
    Abstract: An FRP pipe having threaded ends at both ends, such as casing, tubing, and coupling, is disclosed, which is characterized in that metal plating is formed on the surface of at least one of the threaded ends.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: January 16, 1990
    Assignees: Sumitomo Metal Industries, Ltd., Nitto Electric Industrial Company, Ltd.
    Inventors: Kunitoshi Kimura, Tetsuzo Arai, Hiroshi Matsuoka, Toshiharu Nakagawa
  • Patent number: 4450452
    Abstract: The invention provides a data recording medium comprising: a pair of disc-shaped substrates opposing each other at a distance; a radiation-sensitive recording layer formed on an opposing surface of each of the substrates; a protective layer formed on each of the recording layers; and an adhesive layer which fills a space defined between the protective layers and which is bonded to the protective layers. The data recording medium of the invention has great mechanical strength, is capable of preventing degradation of the recording layer, is easy to manufacture and is durable over a long period of time.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: May 22, 1984
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Hideo Ando, Toshiharu Nakagawa, Yoshinori Fujimori
  • Patent number: 4403231
    Abstract: The invention provides a data recording medium comprising: a disc-shaped substrate; a radiation-sensitive recording layer formed on one surface of the substrate; an oxide layer formed by oxidizing a surface of the said recording layer; and a protective layer formed on the oxide layer. The data recording medium of the invention prevents formation of cracks in the recording layer and/or protective layer and is improved in the manufacturing yield.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: September 6, 1983
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Hideo Ando, Toshiharu Nakagawa
  • Patent number: 4266503
    Abstract: An apparatus for forming a cloud of magnetic toner particles has a rotatable magnet roller with a number of magnetic poles disposed within a non-magnetic cylindrical sleeve. Magnetic toner particles are supplied from a hopper onto the sleeve. A magnetic bar is disposed above the sleeve. The rotation of the magnet roller causes the sleeve to carry magnetic toner particles thereon. When the magnetic toner particles carried approach to the magnetic bar, those become in a cloudy state.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: May 12, 1981
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Tsutomu Uehara, Toshihiko Oguchi, Tsutomu Kubo, Yukio Suzuki, Toshiharu Nakagawa, Ichiyoshi Saito