Patents by Inventor Kei Nakamura

Kei Nakamura 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: 20160172520
    Abstract: A solar cell module includes a solar cell string including solar cells disposed in an arrangement direction and at least two wiring members provided to extend along the arrangement direction in order to electrically connect the solar cells. The at least two wiring members include a first wiring member disposed at a first position where a distance between the solar cells adjacent to each other is short and a second wiring member disposed at a second position where the distance between the solar cells adjacent to each other is long. The respective first and second wiring members include bent portions between the solar cells. Between edge portions of the solar cells facing each other, the first wiring member has a slope whose maximum value is larger than the maximum value of a slope of the second wiring member.
    Type: Application
    Filed: February 23, 2016
    Publication date: June 16, 2016
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kei NAKAMURA
  • Patent number: 8456343
    Abstract: A switched capacitor type D/A converter receives m-bit (m represents an integer) input data, and outputs an analog signal that corresponds to the input data value. Switch circuits are provided to respective bits of the input data, and are classified into two groups: a first group configured to turn on when the corresponding input data bit is 1, and to turn off when the corresponding input data bit is 0; and a second group configured to turn on when the corresponding input data bit is 0, and to turn off when the corresponding input data bit is 1. Each switch of the first and second switch groups is configured as a P-channel MOSFET (Metal Oxide Semiconductor Field Effect Transistor). The ground voltage 0 V is applied to the lower power supply terminal of each of the first and second inverters configured to supply a gate signal to each switch.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: June 4, 2013
    Assignee: Rohm Co., Ltd.
    Inventor: Kei Nakamura
  • Patent number: 8452138
    Abstract: An optical sensor module is provided in which an engagement portion of a board unit is fitted in a groove of an optical waveguide unit and, even with the single engagement portion, the board unit is stably supported. An optical sensor module includes an optical waveguide unit, and a board unit mounted with an optical element and coupled to the optical waveguide unit. The optical waveguide unit includes a single edge extension portion axially extending along one side edge of an over-cladding layer, a board unit engagement groove provided in the single edge extension portion, and a projection provided on a side wall of the vertical groove and kept in abutment against an engagement portion of the board unit. The board unit includes an engagement portion fitted in the vertical groove, which abuts against the projection within the vertical groove.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: May 28, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Ryusuke Naito, Emiko Tani, Masayuki Hodono, Yusuke Shimizu, Kei Nakamura
  • Publication number: 20130048834
    Abstract: The input device includes a frame-shaped optical waveguide having a hollow input-use interior, and a control means provided on the outside of one of the sides of the optical waveguide. The optical waveguide and the control means are provided on a surface of a frame-shaped retainer plate. The control means includes: a light-emitting element connected to ends of light-emitting cores of the optical waveguide; a light-receiving element connected to ends of light-receiving cores of the optical waveguide; and a CPU incorporating a program. Upon sensing a first light-shielded area where light is intercepted by the tip of a pen and a second light-shielded area where light is intercepted by user's hand that holds the pen, the program recognizes the second light-shielded area larger than the first light-shielded area as unnecessary information, based on a difference in light-shielded area.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 28, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toru Mizutani, Naoki Shibata, Yusuke Shimizu, Kei Nakamura
  • Patent number: 8378226
    Abstract: A wired circuit board includes a conductive pattern, and an insulating layer covering the conductive pattern and having a transmittance of not more than 30% with respect to a wavelength in a range of 600 to 680 nm.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: February 19, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Makoto Tsunekawa, Kei Nakamura, Takatoshi Sakakura, Yoshihiro Toyoda
  • Patent number: 8330054
    Abstract: A plurality of wiring traces are formed on a base insulating layer, and a metal layer is formed on the opposite surface of the base insulating layer. Two adjacent wiring traces constitute a transmission line pair. The width of the wiring trace is set to not more than 250 ?m, and the distance between the adjacent wiring traces is set to not less than 8 ?m. The thickness of the base insulating layer is selected to cause differential impedance of the transmission line pair to be not less than 10 ? and not more than 50 ?.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: December 11, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Mitsuru Honjo, Daisuke Yamauchi, Kei Nakamura
  • Publication number: 20120201490
    Abstract: An optical sensor module is provided in which an engagement portion of a board unit is fitted in a groove of an optical waveguide unit and, even with the single engagement portion, the board unit is stably supported. An optical sensor module includes an optical waveguide unit, and a board unit mounted with an optical element and coupled to the optical waveguide unit. The optical waveguide unit includes a single edge extension portion axially extending along one side edge of an over-cladding layer, a board unit engagement groove provided in the single edge extension portion, and a projection provided on a side wall of the vertical groove and kept in abutment against an engagement portion of the board unit. The board unit includes an engagement portion fitted in the vertical groove, which abuts against the projection within the vertical groove.
    Type: Application
    Filed: January 30, 2012
    Publication date: August 9, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Ryusuke Naito, Emiko Tani, Masayuki Hodono, Yusuke Shimizu, Kei Nakamura
  • Publication number: 20120013496
    Abstract: A switched capacitor type D/A converter receives m-bit (m represents an integer) input data, and outputs an analog signal that corresponds to the input data value. Switch circuits are provided to respective bits of the input data, and are classified into two groups: a first group configured to turn on when the corresponding input data bit is 1, and to turn off when the corresponding input data bit is 0; and a second group configured to turn on when the corresponding input data bit is 0, and to turn off when the corresponding input data bit is 1. Each switch of the first and second switch groups is configured as a P-channel MOSFET (Metal Oxide Semiconductor Field Effect Transistor). The ground voltage 0 V is applied to the lower power supply terminal of each of the first and second inverters configured to supply a gate signal to each switch.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 19, 2012
    Applicant: ROHM CO., LTD.
    Inventor: Kei Nakamura
  • Patent number: 8092696
    Abstract: An insulating layer made of an insulator film or the like is prepared. Then, a thin metal film and a thin copper film are formed in sequence on the insulating layer. The thin copper film is subsequently laminated with a dry film or the like, and exposed and developed to form a plating resist thereon that have patterns opposite to conductor patterns which are formed in a subsequent step. This is followed by forming conductor patterns made of copper, by electrolytic plating using an electrolytic copper sulfate plating solution, on the surfaces of the thin copper film where the plating resist is not formed. The plating resist is then removed by, for example, stripping. After this, the thin copper film is held at a temperature of not less than 200° C. and not more than 300° C. for approximately an hour to be thermally treated. Then, the thin copper film and the thin metal film are removed by chemical etching except the portions under the conductor patterns.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: January 10, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Kei Nakamura, Takeshi Yamato
  • Publication number: 20110273231
    Abstract: A semiconductor integrated circuit receives an input current, and supplies, to a different circuit, an output current that corresponds to the input current. A first terminal of a first variable resistor is connected to an input terminal. A first transistor and a second transistor are sequentially arranged in series between a power supply terminal and a second terminal of the first variable resistor. A third transistor and a fourth transistor are sequentially arranged in series between the power supply terminal and an output terminal. The gates of the first transistor and the third transistor are each connected to the second terminal of the first variable resistor. The gates of the second transistor and the fourth transistor are each connected to the input terminal. The first variable resistor is configured to be capable of switching the resistance value thereof according to the input current.
    Type: Application
    Filed: January 21, 2011
    Publication date: November 10, 2011
    Applicant: ROHM CO., LTD.
    Inventor: Kei NAKAMURA
  • Patent number: 7933529
    Abstract: An image forming apparatus includes a fixing apparatus for fixing a toner image onto a recording medium by applying pressure and heat to toner provided on the surface of the recording medium. The fixing apparatus includes a fixing member, a pressing member for pressing against the fixing member, a temperature detecting part for detecting the temperature of the fixing member, and a heating member including a main heating member and an auxiliary heating member for heating the fixing member, the main heating member being heated by obtaining power from a main power supply, the auxiliary heating member being heated by obtaining power from an auxiliary power supply.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: April 26, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Kei Nakamura, Nobuyuki Satoh
  • Patent number: 7894736
    Abstract: An image forming apparatus which causes a long recording medium carrying a toner image thereon to pass between a fixing roller and a pressure roller to fix the toner image onto the long recording medium by means of the action of heat and pressure. The temperature of the fixing roller is prevented from being significantly reduced during operation of fixing the toner image, and thereby the occurrence of a toner image fixation failure is prevented. When the temperature of the fixing roller is reduced, in addition to a main heating member of heating means, electric power is also supplied from an auxiliary power source to an auxiliary heating member to cause the auxiliary heating member to generate heat.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: February 22, 2011
    Assignee: Ricoh Company, Ltd.
    Inventor: Kei Nakamura
  • Publication number: 20100277835
    Abstract: A plurality of wiring traces are formed on a base insulating layer, and a metal layer is formed on the opposite surface of the base insulating layer. Two adjacent wiring traces constitute a transmission line pair. The width of the wiring trace is set to not more than 250 ?m, and the distance between the adjacent wiring traces is set to not less than 8 ?m. The thickness of the base insulating layer is selected to cause differential impedance of the transmission line pair to be not less than 10? and not more than 50?.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 4, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Mitsuru Honjo, Daisuke Yamauchi, Kei Nakamura
  • Patent number: 7787788
    Abstract: A fixing device includes a fixing member, pressure member, first temperature detector, and pressure adjustment mechanism. The pressure member presses against the fixing member to form a nip though which a recording medium bearing a toner image thereon is conveyed. The first temperature detector detects a temperature of the fixing member. The pressure adjustment mechanism performs an adjustment to contact pressure between the fixing and pressure members to be lower than an appropriate pressure for image fixing at the detected temperature of the fixing roller or separation of the pressure roller from the fixing member for a part of a period between a time at which a tailing end of a precedent recording medium is conveyed out from the nip and a time at which a leading end of a following recording medium is conveyed into the nip when a plurality of recording media are successively conveyed through the nip.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: August 31, 2010
    Assignee: Ricoh Company, Ltd.
    Inventor: Kei Nakamura
  • Publication number: 20090242506
    Abstract: A wired circuit board is provided having a high-reliability conductive pattern formed thereon and mounting an electronic component thereon with high accuracy, and a method is provided for manufacturing the wired circuit board and mounting the electronic component thereon. An insulating layer including a mounting portion is formed on a metal supporting layer having a specular gloss of 150 to 500% at an incidence angle of 45°. A conductive pattern is formed on the insulating layer. By a reflection-type optical sensor, a defective shape of the conductive pattern is inspected. Then, an opening is formed by etching the portion of the metal supporting layer which is overlapping the mounting portion such that the mounting portion of the insulating layer exposed by etching has a haze value of 20 to 50%, whereby a TAB tape carrier is obtained.
    Type: Application
    Filed: June 3, 2009
    Publication date: October 1, 2009
    Applicant: Nitto Denko Corporation
    Inventors: Kei Nakamura, Hitoshi Ishizaka
  • Patent number: 7577485
    Abstract: The invention is intended to provide a building sequence planning system for an automobile production line, which can prepare an efficient building sequence. The system comprises an input unit (1) for inputting information of vehicles to be manufactured, a processing unit (3) for deciding an optimum building sequence based on the vehicle information inputted through the input unit (1), and an output unit (5) for externally outputting a building sequence schedule decided by the processing unit (3). The processing unit (3) prepares a vehicle building sequence, determines a degree of dissatisfaction of the prepared building sequence, as a penalty value, in accordance with restriction conditions which are inputted through the input unit (1) and are imposed when building the vehicles into work, and decides a building sequence with a minimum penalty by preparing a plurality of building sequences and determining the penalty value for each building sequence with respect to the restriction conditions.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: August 18, 2009
    Assignees: Hitachi, Ltd., Nissan Motor Co., Ltd., Hitachi Engineering Co., Ltd.
    Inventors: Hitoshi Onizawa, Masanori Sato, Kei Nakamura, Atsumi Ichikawa, Hiroshi Soejima, Shinichi Sakagami, Yutaka Sanada
  • Publication number: 20090192153
    Abstract: An adenine compound or its pharmaceutically acceptable salt as a medicament as shown following formula (1): wherein R1 is optionally substituted alkyl group, etc., X is oxygen atom, etc., A is 4 to 8 membered optionally substituted saturated or unsaturated heterocyclic group containing 1 to 2 hetero atoms selected from 1 to 3 nitrogen atoms, 0 to 1 oxygen atom and 0 to 1 sulfur atom, L1 and L2 are independently straight or branched chain alkylene, or a single bond, R2 is optionally substituted alkyl group, etc.
    Type: Application
    Filed: September 21, 2006
    Publication date: July 30, 2009
    Applicants: Dainippon Sumitomo Pharma Co., Ltd. a corporation of Japan, AstraZeneca Aktiebolag A corporation of Sweden
    Inventors: Kazuki Hashimoto, Tomoaki Nakamura, Kei Nakamura, Ayumu Kurimoto, Yoshiaki Isobe, Haruhisa Ogita, Ian Millichip, Thomas Mcinally, Roger Bonnert
  • Patent number: 7561434
    Abstract: A wired circuit board is provided having a high-reliability conductive pattern formed thereon and mounting an electronic component thereon with high accuracy, and a method is provided for manufacturing the wired circuit board and mounting the electronic component thereon. An insulating layer including a mounting portion is formed on a metal supporting layer having a specular gloss of 150 to 500% at an incidence angle of 45°. A conductive pattern is formed on the insulating layer. By a reflection-type optical sensor, a defective shape of the conductive pattern is inspected. Then, an opening is formed by etching the portion of the metal supporting layer which is overlapping the mounting portion such that the mounting portion of the insulating layer exposed by etching has a haze value of 20 to 50%, whereby a TAB tape carrier is obtained.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: July 14, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Kei Nakamura, Hitoshi Ishizaka
  • Patent number: 7551452
    Abstract: In an outer lead portion, outer lead wirings are provided on one surface of a base insulating layer and a plurality of metal substrates are provided on the opposite surface thereof. The plurality of metal substrates are provided with predetermined spacings therebetween. The outer lead wirings are not provided on the areas on the surface opposite to the areas on the other surface of the base insulating layer on which the slits are provided between the metal substrates. Metals such as stainless steel, copper or copper alloy can be used for the metal substrates. Coefficient of linear expansion of each metal substrate is preferably equal to that of the base insulating layer.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: June 23, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Yasuto Ishimaru, Kei Nakamura
  • Publication number: 20090121423
    Abstract: An image forming apparatus includes an image forming device forming an image on a recording medium wound into a roll, and a roll sheet conveyance device unwinding and conveying the medium to the image forming device. The roll sheet conveyance device includes a roll sheet feed device, a torsion detector, and a control device. The roll sheet feed device includes a drive device including upstream and downstream shafts in a drive transmission direction to rotate the medium, and a feed device to feed the medium. The detection device includes a torsion coil spring provided between the upstream and downstream shafts, and a pair of an encoder and an encoder sensor detecting the torsion amount at the opposite ends of the torsion coil spring. The control device controls the torsion amount on the basis of a signal from the detection device, and applies a given back tension to the medium.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 14, 2009
    Inventors: Kei Nakamura, Nobuyuki Satoh