Patents by Inventor Iwao Fujikawa

Iwao Fujikawa 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: 20200110582
    Abstract: An arithmetic processing device for resolver signal including: an A/D converter for converting a rotation detection signal of a rotation detection sensor supplied from the outside into a digital signal; and a logic unit constituting a logic circuit that calculates the angle of the script detection sensor from the digital signal output from the A/D converter, wherein the amplifier, the A/D converter, and the logic unit are mounted in the same chip or in the same package.
    Type: Application
    Filed: May 9, 2018
    Publication date: April 9, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Mitsunori KATSU, Shoichi SEKIGUCHI, Iwao FUJIKAWA
  • Patent number: 7460354
    Abstract: One inventive aspect relates to a laminated capacitor capable of satisfying higher electrostatic capacitance and lower ESL at the same time. A dielectric chip constituting the laminated capacitor has an integral structure formed by alternately laminating a pair of first inner conductor layer and second inner conductor layer which are positioned on the same plane and are held in a non-contact relation, and a pair of third inner conductor layer and fourth inner conductor layer which are positioned on the same plane and are held in a non-contact relation, while a dielectric layer is interposed between the pair of first and second inner conductor layers and the pair of third and fourth inner conductor layers. Voltage of one polarity is applied to the first and fourth inner conductor layers from a first outer electrode through lead-out portions, and voltage of the other polarity is applied to the second and third inner conductor layers from a second outer electrode through lead-out portions.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: December 2, 2008
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masayuki Shimizu, Iwao Fujikawa, Kazuyuki Shibuya
  • Publication number: 20070247783
    Abstract: One inventive aspect relates to a laminated capacitor capable of satisfying higher electrostatic capacitance and lower ESL at the same time. A dielectric chip constituting the laminated capacitor has an integral structure formed by alternately laminating a pair of first inner conductor layer and second inner conductor layer which are positioned on the same plane and are held in a non-contact relation, and a pair of third inner conductor layer and fourth inner conductor layer which are positioned on the same plane and are held in a non-contact relation, while a dielectric layer is interposed between the pair of first and second inner conductor layers and the pair of third and fourth inner conductor layers. Voltage of one polarity is applied to the first and fourth inner conductor layers from a first outer electrode through lead-out portions, and voltage of the other polarity is applied to the second and third inner conductor layers from a second outer electrode through lead-out portions.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 25, 2007
    Applicant: Taiyo Yuden Co., Ltd.
    Inventors: Masayuki Shimizu, Iwao Fujikawa, Kazuyuki Shibuya
  • Patent number: 6727792
    Abstract: A wire wound electronic component of the present invention includes a bobbin having a core 1a having a substantially circular cross-section and rectangular flanges 1b formed at both ends of the core. A groove 2 is formed in each side of each flange 1b. A conductive film or external electrode 3 is formed on each flange 1b. A coil or wire 4 is wound round the core 1a and has a conductor protruding from opposite stripped ends thereof. The opposite ends 5 of the conductor are respectively received in the grooves 2 of the flanges 1b and connected to the conductive films 3. A coating or armor 6 is formed on the coil 4 and has a flat surface 6a. The coating 6 has a rectangular configuration complementary to the configuration of the flanges 1b.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: April 27, 2004
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
  • Publication number: 20020190832
    Abstract: A wire wound electronic component of the present invention includes a bobbin having a core 1a having a substantially circular cross-section and rectangular flanges 1b formed at both ends of the core. A groove 2 is formed in each side of each flange 1b. A conductive film or external electrode 3 is formed on each flange 1b. A coil or wire 4 is wound round the core 1a and has a conductor protruding from opposite stripped ends thereof. The opposite ends 5 of the conductor are respectively received in the grooves 2 of the flanges 1b and connected to the conductive films 3. A coating or armor 6 is formed on the coil 4 and has a flat surface 6a. The coating 6 has a rectangular configuration complementary to the configuration of the flanges 1b.
    Type: Application
    Filed: August 28, 2002
    Publication date: December 19, 2002
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
  • Patent number: 6449830
    Abstract: A wire wound electronic component includes a bobbin having a core 1a having a substantially circular cross-section and rectangular flanges 1b formed at both ends of the core. A groove 2 is formed in each side of each flange 1b. A conductive film or external electrode 3 is formed on each flange 1b. A coil or wire 4 is wound round the core 1a and has a conductor protruding from opposite stripped ends thereof. The opposite ends 5 of the conductor are respectively received in the grooves 2 of the flanges 1b and connected to the conductive films 3. A coating or armor 6 is formed on the coil 4 and has a flat surface 6a. The coating 6 has a rectangular configuration complementary to the configuration of the flanges 1b.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: September 17, 2002
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
  • Patent number: 6144280
    Abstract: A wire wound electronic component of the present invention includes a bobbin having a core 1a having a substantially circular cross-section and rectangular flanges 1b formed at both ends of the core. A groove 2 is formed in each side of each flange 1b. A conductive film or external electrode 3 is formed on each flange 1b. A coil or wire 4 is wound round the core 1a and has a conductor protruding from opposite stripped ends thereof. The opposite ends 5 of the conductor are respectively received in the grooves 2 of the flanges 1b and connected to the conductive films 3. A coating or armor 6 is formed on the coil 4 and has a flat surface 6a. The coating 6 has a rectangular figuration complementary to the configuration of the flanges 1b.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: November 7, 2000
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
  • Patent number: 4910113
    Abstract: Colored microfine globular particles are produced by causing carbon black to react with a polymer capable of reacting with the carbon black thereby forming a carbon black-graft polymer, dispersing this carbon black-graft polymer in a polymerizable monomer component, and then polymerizing the polymerizable monomer component. These particles, in the unmodified form, are usable as a toner for the development of images of static charge and, in a form incorporated in a varying component, are usable such as in resin composition, coating composition, thermosensitive transfer ink ribbon coating agent, thermosensitive transfer ink, or back-coating agent for magnetic recording medium.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: March 20, 1990
    Assignee: Nippon Shokubai Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshikuni Mori, Mitsuo Kushino, Hayato Ikeda, Nobuaki Urashima, Kenji Minami, Iwao Fujikawa
  • Patent number: 4767807
    Abstract: A coloring agent for the dope-dyeing viscose rayon, comprising minute spherical cured particles of an amino resin produced from formaldehyde and at least one amino compound selected from the group consisting of benzoguanamine, melamine, and urea and colored with a dye, a viscose composition containing the coloring agent, a viscose rayon obtained by spinning the composition, and a method for manufacture thereof.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: August 30, 1988
    Assignee: Nippon Shokubai Kagaku Kogyo Co. Ltd.
    Inventors: Iwao Fujikawa, Mitsuo Kushino, Yasuhiro Yamamoto
  • Patent number: 4640584
    Abstract: Spacers for a liquid crystal display device, which comprise fine spherical cured particles of amino resin obtained from formaldehyde and at least one amino compound selected from the group consisting of benzoguanamine, melamine and urea.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: February 3, 1987
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Tsuneo Tsubakimoto, Iwao Fujikawa, Mitsuo Kushino