Patents by Inventor Takuo Nishikawa
Takuo Nishikawa 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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Patent number: 10058258Abstract: A biomagnetism measuring device includes a magnetic sensor and a support unit. The magnetic sensor includes a tunnel magneto-resistive element including a fixed magnetic layer, a free magnetic layer and an insulating layer. The insulating layer is disposed between the fixed magnetic layer and the free magnetic layer, and has resistance being changed by a tunnel effect depending on an angle difference between a direction of magnetization of the fixed magnetic layer and a direction of magnetization of the free magnetic layer. The support unit supports the magnetic sensor in such a way that the tunnel magneto-resistive element faces a living body. The magnetic sensor outputs an output signal in accordance with a resistance value of the insulating layer, the resistance value being changed by magnetism emitted from the living body.Type: GrantFiled: August 30, 2011Date of Patent: August 28, 2018Assignees: KONICA MINOLTA ADVANCED LAYERS, INC., Tohoku UniversityInventors: Takuo Nishikawa, Yasuo Ando
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Patent number: 8933696Abstract: A magnetic sensor includes a plurality of assemblies combined. Each assembly includes a plurality of tunnel magnetoresistive elements, a capacitor and a fixed resistor. The tunnel magnetoresistive dements are (i) disposed in such a way that fixed magnetization directions of fixed magnetic layers are substantially identical and changeable magnetization directions of free magnetic layers with no magnetic field applied are substantially identical and (ii) connected to each other in series-parallel. The capacitor is connected in parallel to the tunnel magnetoresistive elements. The fixed resistor is connected in series to the tunnel magnetoresistive elements and to the capacitor. The assemblies are (i) disposed in such a way that the fixed magnetization directions of the fixed magnetic layers of the assemblies have a relative angle of more than 90 degrees and (ii) connected to each other in series and/or in parallel.Type: GrantFiled: May 16, 2012Date of Patent: January 13, 2015Assignee: Konica Minolta, Inc.Inventor: Takuo Nishikawa
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Publication number: 20140062472Abstract: A magnetic sensor includes a plurality of assemblies combined. Each assembly includes a plurality of tunnel magnetoresistive elements, a capacitor and a fixed resistor. The tunnel magnetoresistive elements are (i) disposed in such a way that fixed magnetization directions of fixed magnetic layers are substantially identical and changeable magnetization directions of free magnetic layers with no magnetic field applied are substantially identical and (ii) connected to each other in series-parallel. The capacitor is connected in parallel to the tunnel magnetoresistive elements. The fixed resistor is connected in series to the tunnel magnetoresistive elements and to the capacitor. The assemblies are (i) disposed in such a way that the fixed magnetization directions of the fixed magnetic layers of the assemblies have a relative angle of more than 90 degrees and (ii) connected to each other in series and/or in parallel.Type: ApplicationFiled: May 16, 2012Publication date: March 6, 2014Applicant: Konica Minolta, Inc.Inventor: Takuo Nishikawa
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Publication number: 20130165766Abstract: A biomagnetism measuring device includes a magnetic sensor and a support unit. The magnetic sensor includes a tunnel magneto-resistive element including a fixed magnetic layer, a free magnetic layer and an insulating layer. The insulating layer is disposed between the fixed magnetic layer and the free magnetic layer, and has resistance being changed by a tunnel effect depending on an angle difference between a direction of magnetization of the fixed magnetic layer and a direction of magnetization of the free magnetic layer. The support unit supports the magnetic sensor in such a way that the tunnel magneto-resistive element faces a living body. The magnetic sensor outputs an output signal in accordance with a resistance value of the insulating layer, the resistance value being changed by magnetism emitted from the living body.Type: ApplicationFiled: August 30, 2011Publication date: June 27, 2013Inventors: Takuo Nishikawa, Yasuo Ando
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Patent number: 7782388Abstract: A solid image pickup device includes an image pickup unit on which image pickup elements are arranged in a two dimensional form, a print on which the image pickup unit is mounted, and protrusions formed in a pattern form of a conductive material on a floor area, of the print board, covered by the image pickup unit such that the protrusions surround a central part of the floor area, wherein the image pickup unit is fixed with an adhesive on the protrusions and the floor area of the print board.Type: GrantFiled: August 18, 2006Date of Patent: August 24, 2010Assignee: Konica Minolta Opto, Inc.Inventors: Takuo Nishikawa, Kazuo Tansho
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Patent number: 7326902Abstract: An image pickup device includes an optical member; a semiconductor image pickup element having a photoelectric converter for photoelectrically converting a light flux converged by the optical member into electric signal and for storing the electric signal thereon, and an analog circuit being adjacent to the photoelectric converter for outputting the stored electric signal in the photoelectrical converter; and an incident light preventing portion for preventing a light flux from a space between a wiring layer provided on the analog circuit and a wiring layer provided on the photoelectric converter.Type: GrantFiled: March 6, 2006Date of Patent: February 5, 2008Assignee: Konica Minolta Opto, Inc.Inventors: Takuo Nishikawa, Hiroshi Takahashi, Kazuo Tansho
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Publication number: 20070047098Abstract: A solid image pickup device includes an image pickup unit on which image pickup elements are arranged in a two dimensional form, a print on which the image pickup unit is mounted, and protrusions formed in a pattern form of a conductive material on a floor area, of the print board, covered by the image pickup unit such that the protrusions surround a central part of the floor area, wherein the image pickup unit is fixed with an adhesive on the protrusions and the floor area of the print board.Type: ApplicationFiled: August 18, 2006Publication date: March 1, 2007Inventors: Takuo Nishikawa, Kazuo Tansho
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Publication number: 20060234767Abstract: An imaging unit mounted on a compact portable terminal equipment such as a cellular phone set, etc. On a side of a flexible printed circuit board (FPC) having an opening (20) at a predetermined position thereof, an imaging element (2) is provided such that at least a part of the opening is closed and an imaging area is exposed. The imaging element is connected by a flip-chip package. On the other side of the flexible printed circuit board, a reinforcing plate (10) made of a material of a liner expansion coefficient of less than 1×10?5 (cm/cm/° C.) is attached to reinforce the flexible printed circuit board. Thus, it becomes possible to provide an imaging unit (100) having superior resistance against the heat shock when the imaging element is connected the imaging unit and the heat shock when the portable terminal equipment in which the imaging unit is arranged is used.Type: ApplicationFiled: April 20, 2004Publication date: October 19, 2006Inventors: Takuo Nishikawa, Kazuo Tansho
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Publication number: 20060202106Abstract: An image pickup device includes an optical member; a semiconductor image pickup element having a photoelectric converter for photoelectrically converting a light flux converged by the optical member into electric signal and for storing the electric signal thereon, and an analog circuit being adjacent to the photoelectric converter for outputting the stored electric signal in the photoelectrical converter; and an incident light preventing portion for preventing a light flux from a space between a wiring layer provided on the analog circuit and a wiring layer provided on the photoelectric converter.Type: ApplicationFiled: March 6, 2006Publication date: September 14, 2006Applicant: Konica Minolta Opto, Inc.Inventors: Takuo Nishikawa, Hiroshi Takahashi, Kazuo Tansho
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Publication number: 20040061799Abstract: An image pickup device having therein a base board on which an opening portion is formed, an image pickup element that is attached on the reverse side of the base board so that at least a part of the opening portion may be covered, an optical member that is attached to be in contact with the surface of the image pickup element, from the surface side of the base board through the opening portion, and converges incident light on the image pickup element, and an outer frame member that is mounted on the base board to cover the optical member and the opening portion.Type: ApplicationFiled: September 22, 2003Publication date: April 1, 2004Applicant: Konica CorporationInventors: Yuichi Atarashi, Masashi Saito, Takuo Nishikawa, Kazuhiko Suzuki, Kazuo Tansho
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Patent number: 6481820Abstract: An ink-jet printer which can carry out high speed image formation and which can avoid image failure due to a defective nozzle includes a first printing head to emit ink particles, said first printing head being a line-type head in which a plurality of ink-jet nozzles are arranged in a line, and a second printing head to emit ink particles having a same color as that of the ink particles emitted by the first printing head. Alternatively, the ink-jet printer may include a printing head to emit ink particles, a nozzle checking device for detecting a defect of the ink-jet nozzle mounted in the printing head, and a driving unit for moving the printing head in a line direction.Type: GrantFiled: May 19, 1999Date of Patent: November 19, 2002Assignee: Konica CorporationInventors: Akihiko Tamura, Takuo Nishikawa
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Patent number: 6460967Abstract: In a liquid jetting apparatus provided with a head provided with a liquid jetting section; a feeding section for feeding a liquid to the head; and a control section for controlling the liquid jetting section to jet the liquid such that a jetting trace of the liquid is recorded on a recording medium; the liquid jetting apparatus is further provided with a liquid ejecting section for varying a pressure in the head in plural steps so as to eject the liquid in the head from the liquid jetting section.Type: GrantFiled: March 19, 1999Date of Patent: October 8, 2002Assignee: Konica CorporationInventors: Masahiro Makita, Yoshikazu Maekawa, Takuo Nishikawa
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Patent number: 6454394Abstract: An inkjet head is provided with a flexible printed circuit cable where a head body for ejecting ink and a connector are mounted at places different from each other, and the flexible printed circuit cable is bent between the head body and the connector so as to absorb tensile and pushing forces applied to the connector. The inkjet head is also provided with an ink ejecting portion for ejecting ink, a head-side connector and a supporting body or a cover for supporting or storing an electric connection portion or a flexible printed circuit cable interposed between the ink ejecting portion and the connector, and the head-side connector is supported by the supporting body or the cover so that the connector is movable in three-dimensional directions.Type: GrantFiled: March 19, 2001Date of Patent: September 24, 2002Assignees: Olympus Optical Co., Ltd., Konica CorporationInventors: Makoto Shibano, Satoshi Sakurai, Katsuaki Komatsu, Takuo Nishikawa
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Publication number: 20010026303Abstract: An inkjet head is provided with a flexible printed circuit cable where a head body for ejecting ink and a connector are mounted at places different from each other, and the flexible printed circuit cable is bent between the head body and the connector so as to absorb tensile and pushing forces applied to the connector. The inkjet head is also provided with an ink ejecting portion for ejecting ink, a head-side connector and a supporting body or a cover for supporting or storing an electric connection portion or a flexible printed circuit cable interposed between the ink ejecting portion and the connector, and the head-side connector is supported by the supporting body or the cover so that the connector is movable in the three-dimensional directions.Type: ApplicationFiled: March 19, 2001Publication date: October 4, 2001Applicant: Olympus Optical Co., Ltd.Inventors: Makoto Shibano, Satoshi Sakurai, Katsuaki Komatsu, Takuo Nishikawa
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Patent number: 5098785Abstract: A medium recording medium is provided which has a plurality of coated layers on a nonmagnetic base support, a least one of said coated layer containing a modified copolymer having introduced therein an anionic functional group which forms an intramolecular salt.Type: GrantFiled: November 21, 1989Date of Patent: March 24, 1992Assignee: Konica CorporationInventors: Takafumi Yanagita, Tsutomu Kempo, Narito Goto, Takuo Nishikawa, Noboru Koyama, Yasushi Nakano, Setsuko Kawahara
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Patent number: 5094904Abstract: Disclosed is a magnetic recording medium comprising a non-magnetic support, and a first magnetic layer, a second magnetic layer and a third magnetic layer laminated on a non-magnetic support surface in this order, a total layer thickness of the second magnetic layer and the third magnetic layer of 0.7 .mu.m or less, and a coercive force of a ferromagnetic powder contained in the third magnetic layer being 1.2 to 2.5 times as strong as a coercive force of a ferromagnetic powder contained in the first magnetic layer.Type: GrantFiled: March 22, 1991Date of Patent: March 10, 1992Assignee: Konica CorporationInventors: Akira Kawakami, Yasuo Ando, Takuo Nishikawa, Rieko Ren, Miki Edamatsu
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Patent number: 5057352Abstract: A magnetic recording medium is disclosed. The surface of the magnetic layer has a Ns/Ns(t) ratio of 0.10 to 0.35, wherein the Ns is a number of spikes protruding from an average line of a surface roughness cross section curve by not less than 0.01 .mu.m and the Ns(t) is a total number of spikes protruding from the average line. The medium is improved in electromagnetic characteristics, contamination of magnetic head and rubbing noise.Type: GrantFiled: June 12, 1990Date of Patent: October 15, 1991Assignee: Konica CorporationInventors: Yasuo Ando, Takuo Nishikawa