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).
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Publication number: 20200110582Abstract: 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: ApplicationFiled: May 9, 2018Publication date: April 9, 2020Applicant: TAIYO YUDEN CO., LTD.Inventors: Mitsunori KATSU, Shoichi SEKIGUCHI, Iwao FUJIKAWA
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Patent number: 7460354Abstract: 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: GrantFiled: April 10, 2007Date of Patent: December 2, 2008Assignee: Taiyo Yuden Co., Ltd.Inventors: Masayuki Shimizu, Iwao Fujikawa, Kazuyuki Shibuya
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Publication number: 20070247783Abstract: 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: ApplicationFiled: April 10, 2007Publication date: October 25, 2007Applicant: Taiyo Yuden Co., Ltd.Inventors: Masayuki Shimizu, Iwao Fujikawa, Kazuyuki Shibuya
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Patent number: 6727792Abstract: 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: GrantFiled: August 28, 2002Date of Patent: April 27, 2004Assignee: Taiyo Yuden Co., Ltd.Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
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Publication number: 20020190832Abstract: 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: ApplicationFiled: August 28, 2002Publication date: December 19, 2002Applicant: TAIYO YUDEN CO., LTD.Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
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Patent number: 6449830Abstract: 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: GrantFiled: September 19, 2000Date of Patent: September 17, 2002Assignee: Taiyo Yuden Co., Ltd.Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
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Patent number: 6144280Abstract: 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: GrantFiled: November 10, 1997Date of Patent: November 7, 2000Assignee: Taiyo Yuden Co., Ltd.Inventors: Yoshihiro Amada, Hideo Aoba, Kazuhiko Otsuka, Nobuhiro Umeyama, Katsuo Koizumi, Nobuo Mamada, Iwao Fujikawa, Nobuyasu Shiba, Takayuki Uehara
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Patent number: 4910113Abstract: 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: GrantFiled: July 7, 1988Date of Patent: March 20, 1990Assignee: Nippon Shokubai Kagaku Kogyo Kabushiki KaishaInventors: Yoshikuni Mori, Mitsuo Kushino, Hayato Ikeda, Nobuaki Urashima, Kenji Minami, Iwao Fujikawa
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Patent number: 4767807Abstract: 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: GrantFiled: August 18, 1986Date of Patent: August 30, 1988Assignee: Nippon Shokubai Kagaku Kogyo Co. Ltd.Inventors: Iwao Fujikawa, Mitsuo Kushino, Yasuhiro Yamamoto
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Patent number: 4640584Abstract: 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: GrantFiled: March 22, 1985Date of Patent: February 3, 1987Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Tsuneo Tsubakimoto, Iwao Fujikawa, Mitsuo Kushino