Patents by Inventor Takahiro Nakagawa

Takahiro 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: 10347655
    Abstract: A radio frequency switch includes a switch circuit having switchable radio frequency (RF) signal pathways. Each switchable RF signal pathway comprises a plurality of n-type MOSFETs connected in series. A control circuit is configured to control a conduction state of the plurality of switchable RF signal pathways. Each n-type MOSFET includes a body region between a source region thereof and a drain region thereof. A gate electrode is on the body region. A silicon nitride film having a tensile internal stress covers the source layer, the drain layer, and the gate electrode.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: July 9, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuya Nishihori, Keita Masuda, Tooru Suga, Takahiro Nakagawa, Kazuhiko Shibata
  • Publication number: 20190031098
    Abstract: An information output device according to an embodiment includes a detection unit, a display control unit, and a sound control unit. The detection unit detects an operation of a user that is executed on an input unit that is connected to a display unit. The display control unit displays, on the display unit, a notification screen that presents predetermined notification information to the user. The sound control unit outputs a notification sound that is associated with display of the notification screen that is executed by the display control unit. Furthermore, the sound control unit limits output of the notification sound for a period of time when an operation of the user is detected by the detection unit.
    Type: Application
    Filed: March 20, 2018
    Publication date: January 31, 2019
    Applicant: DENSO TEN Limited
    Inventors: Tamaki TAKEUCHI, Takahiro NAKAGAWA
  • Patent number: 9768268
    Abstract: A semiconductor device according to an embodiment switches high-frequency signals and includes a semiconductor layer of a first conductivity type. A first layer of a second conductivity type is provided in the semiconductor layer. A second layer of the second conductivity type is provided in the semiconductor layer. A gate dielectric film is provided on the semiconductor layer, the first layer and the second layer. A gate electrode is provided on the gate dielectric film. The gate dielectric film includes a first portion and the semiconductor layer, and a second portion located at both side of the first portion-in a gate length direction of the gate electrode and being thicker than the first portion. At least a part of the second portion is located between the gate electrode and the first layer and between the gate electrode and the second layer.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: September 19, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuya Nishihori, Takahiro Nakagawa
  • Publication number: 20170213848
    Abstract: A radio frequency switch includes a switch circuit having switchable radio frequency (RF) signal pathways. Each switchable RF signal pathway comprises a plurality of n-type MOSFETs connected in series. A control circuit is configured to control a conduction state of the plurality of switchable RF signal pathways. Each n-type MOSFET includes a body region between a source region thereof and a drain region thereof. A gate electrode is on the body region. A silicon nitride film having a tensile internal stress covers the source layer, the drain layer, and the gate electrode.
    Type: Application
    Filed: January 19, 2017
    Publication date: July 27, 2017
    Inventors: Kazuya NISHIHORI, Keita MASUDA, Tooru SUGA, Takahiro NAKAGAWA, Kazuhiko SHIBATA
  • Publication number: 20160204213
    Abstract: A semiconductor device according to an embodiment switches high-frequency signals and includes a semiconductor layer of a first conductivity type. A first layer of a second conductivity type is provided in the semiconductor layer. A second layer of the second conductivity type is provided in the semiconductor layer. A gate dielectric film is provided on the semiconductor layer, the first layer and the second layer. A gate electrode is provided on the gate dielectric film. The gate dielectric film includes a first portion and the semiconductor layer, and a second portion located at both side of the first portion-in a gate length direction of the gate electrode and being thicker than the first portion. At least a part of the second portion is located between the gate electrode and the first layer and between the gate electrode and the second layer.
    Type: Application
    Filed: August 14, 2015
    Publication date: July 14, 2016
    Inventors: Kazuya Nishihori, Takahiro Nakagawa
  • Patent number: 9106728
    Abstract: An object of the present invention is to provide a mobile terminal in which a sound path can be secured around speaker sound holes when the mobile terminal is placed and which can thereby provide stable sound to a user. A mobile terminal according to the present invention is a mobile terminal in which an upper housing including a display unit is connected to a lower housing (1) including an operation unit in a freely-movable fashion and a speaker sound hole (7) is formed in a surface of the lower housing (1) opposite to the operation unit (rear surface), in which the rear surface is configured so as to be inclined with respect to a placing-surface (6) when the mobile terminal is placed on the placing-surface so that a space (9) that allows speaker sound to be released is formed between the rear surface and the placing-surface, and a protrusion (4) is formed near the speaker sound hole (7).
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: August 11, 2015
    Assignee: LENOVO INNOVATIONS LIMITED (HONG KONG)
    Inventor: Takahiro Nakagawa
  • Patent number: 9074964
    Abstract: Provision of an intermediate shaft and a torque meter between a test product and a dynamometer in a transmission testing device in which the test product is set in an environmental chamber leads to a long axial length and thereby requires a large floor area for setting, and also causes a twisting of a shaft and leads to a poor rigidity. A hollow spacer is provided between a face plate of the environmental chamber and a test product attachment holder to which the test product is attached. A flange with an H-shape in side view is disposed in the hollow of the spacer. The flange has an end connected to an adaptor flange fixed to the test product, and another end connected to a rotating shaft of the dynamometer via the torque meter.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: July 7, 2015
    Assignee: MEIDENSHA CORPORATION
    Inventor: Takahiro Nakagawa
  • Publication number: 20140360284
    Abstract: Provision of an intermediate shaft and a torque meter between a test product and a dynamometer in a transmission testing device in which the test product is set in an environmental chamber leads to a long axial length and thereby requires a large floor area for setting, and also causes a twisting of a shaft and leads to a poor rigidity. A hollow spacer is provided between a face plate of the environmental chamber and a test product attachment holder to which the test product is attached. A flange with an H-shape in side view is disposed in the hollow of the spacer. The flange has an end connected to an adaptor flange fixed to the test product, and another end connected to a rotating shaft of the dynamometer via the torque meter.
    Type: Application
    Filed: January 18, 2013
    Publication date: December 11, 2014
    Inventor: Takahiro Nakagawa
  • Patent number: 8896550
    Abstract: A navigation system is provided. A medium insertion port is disposed on the front surface of a main unit and a portable recording medium is loaded into or unloaded from the main unit through the medium insertion port. A display unit is disposed on the front surface of the main unit and can move between a closed position where the medium insertion port is covered and an opened position where the medium insertion port is exposed. A limitation section limits the movement of the display unit to the opened position. A limitation removing section removes the limitation by the limitation section. An operation section receives an operation on the navigation system. The operation section can receive an operation other than an operation to be intrinsically received by the operation section. The limitation removing section removes the limitation by the limitation section when the operation section receives the operation other than the operation to be intrinsically received.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: November 25, 2014
    Assignee: Fujitsu Ten Limited
    Inventors: Fumitake Nakamura, Noriyuki Kamikawa, Takahiro Nakagawa, Satoru Nagamoto
  • Patent number: 8819581
    Abstract: An information processing device capable of processing navigation information is provided. A touch panel can display images and can receive a user's touch operation. An image generation section generates a navigation image including a map image and a plurality of operation button images for receiving the touch operation, the images being displayed on the touch panel. A plurality of operation button images include a first operation button image related to a navigation function and a second operation button image related to a plurality of functions other than the navigation function. The image generation section generates a first image which is obtained by combining the navigation image and the first operation button image and a second image which includes the second operation button. The first image and the second image are respectively displayed in a first display region and a second display region. The first display region and the second display region are separated by a movable boundary.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: August 26, 2014
    Assignee: Fujitsu Ten Limited
    Inventors: Fumitake Nakamura, Noriyuki Kamikawa, Takahiro Nakagawa, Satoru Nagamoto, Takashi Ohta, Takaho Okada, Hideki Kawaguchi
  • Patent number: 8497232
    Abstract: A bis-type alkenyl-substituted succinimide which is prepared by reaction of succinic anhydride substituted with 2-alkenyl group having a branch structure in ?-position with alkylenepolyamine and its derivatives derived from the bis-type alkenyl-substituted succinimide by post-treatment are of value as friction modifiers, particularly for incorporation into lubricating oils for automatic transmissions.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: July 30, 2013
    Assignee: Chevron Japan Limited
    Inventors: Kedar Shanker Shrestha, Michio Shiga, Masami Fuchi, Takahiro Nakagawa
  • Patent number: 8465682
    Abstract: An object of the present invention is to provide a semiconductive rubber belt wherein a variation in the electric resistance is decreased, in particular, in the belt circumferential direction so that high-quality images can be formed, and a process for producing the same. In order to achieve the object, in a case where on any single straight line extended in the belt circumferential direction, the maximum value of the molecular orientation ratio correction value MOR-C of the semiconductive rubber belt, the minimum value thereof, and the average thereof are set to satisfy a specified relationship.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 18, 2013
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventor: Takahiro Nakagawa
  • Patent number: 8456123
    Abstract: A conveyance system. The conveyance system includes a movable device for conveying an article, and a robot selected from the group consisting of an articulated robot and an orthogonal robot. The movable device is configured to be both vertically and horizontally movable; and, the robot is mounted on the movable device. The robot includes a hand and a gripper disposed on the hand. The gripper is configured to hold the article. The movable device and the robot are configured to convey the article in conveyance operations that include an extraction, a conveyance, and an installation, of the article; the range of the conveyance operations lies within a working range of the robot from a present position that is selected with priority. The movable device is configured to remain in a stationary state when the article is conveyed by the robot using the conveyance operations within the working range.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: June 4, 2013
    Assignee: HGST Netherlands B.V.
    Inventors: Shigeto Nishiuchi, Masashi Tsuyama, Takahiro Nakagawa, Youichi Nonaka
  • Patent number: 8385860
    Abstract: According to one embodiment, a power detector includes a reference voltage generator, a square signal generator, a detection circuit, and an output circuit. The reference voltage generator is configured to receive a bias voltage and generate a reference voltage. The square signal generator is configured to receive a voltage having a high frequency input voltage superimposed on the bias voltage and output a signal including the reference voltage, a voltage of a square of the high frequency input voltage, and a high-frequency signal. The detection circuit has a first lowpass filter, a first operational amplifier configured to amplify error between an output voltage of the first lowpass filter and the reference voltage and output the error as a control voltage, and a feedback transistor configured to feed a feedback current according to the control voltage back to an output terminal of the square signal generator.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: February 26, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takayuki Teraguchi, Masahiro Hasegawa, Noriyoshi Odaki, Shigehiro Hosoi, Takahiro Nakagawa
  • Publication number: 20130029890
    Abstract: A lubricating oil composition containing a bis-type alkenyl-substituted succinimide which is prepared by reaction of succinic anhydride substituted with 2-alkenyl group having a branched structure in ?-position with alkylenepolyamine or a compound derived from the bis-type alkenyl-substituted succinimide by post-treatment in combination with a mixture of an overbased sulfonate having a C20-C24 alkyl group and an overbased salicylate having a C14-C18 alkyl group shows a high friction coefficient within a wide sliding velocity range and keeps its high anti-shudder performance for a long period of time.
    Type: Application
    Filed: January 27, 2012
    Publication date: January 31, 2013
    Applicant: Chevron Oronite Company LLC
    Inventors: Shrestha Kedar Shanker, Michio Shiga, Masami Fuchi, Takahiro Nakagawa
  • Publication number: 20130009334
    Abstract: An object of the present invention is to provide a semiconductive rubber belt wherein a variation in the electric resistance is decreased, in particular, in the belt circumferential direction so that high-quality images can be formed, and a process for producing the same. In order to achieve the object, in a case where on any single straight line extended in the belt circumferential direction, the maximum value of the molecular orientation ratio correction value MOR-C of the semiconductive rubber belt, the minimum value thereof, and the average thereof are set to satisfy a specified relationship.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 10, 2013
    Applicant: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Takahiro Nakagawa
  • Patent number: 8293351
    Abstract: An object of the present invention is to provide a semiconductive rubber belt wherein a variation in the electric resistance is decreased, in particular, in the belt circumferential direction so that high-quality images can be formed, and a process for producing the same. In order to achieve the object, in a case where on any single straight line extended in the belt circumferential direction, the maximum value of the molecular orientation ratio correction value MOR-C of the semiconductive rubber belt, the minimum value thereof, and the average thereof are set to satisfy a specified relationship.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: October 23, 2012
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventor: Takahiro Nakagawa
  • Publication number: 20120020509
    Abstract: An object of the present invention is to provide a mobile terminal in which a sound path can be secured around speaker sound holes when the mobile terminal is placed and which can thereby provide stable sound to a user. A mobile terminal according to the present invention is a mobile terminal in which an upper housing including a display unit is connected to a lower housing (1) including an operation unit in a freely-movable fashion and a speaker sound hole (7) is formed in a surface of the lower housing (1) opposite to the operation unit (rear surface), in which the rear surface is configured so as to be inclined with respect to a placing-surface (6) when the mobile terminal is placed on the placing-surface so that a space (9) that allows speaker sound to be released is formed between the rear surface and the placing-surface, and a protrusion (4) is formed near the speaker sound hole (7).
    Type: Application
    Filed: March 2, 2010
    Publication date: January 26, 2012
    Inventor: Takahiro Nakagawa
  • Publication number: 20120008669
    Abstract: According to one embodiment, a power detector includes a reference voltage generator, a square signal generator, a detection circuit, and an output circuit. The reference voltage generator is configured to receive a bias voltage and generate a reference voltage. The square signal generator is configured to receive a voltage having a high frequency input voltage superimposed on the bias voltage and output a signal including the reference voltage, a voltage of a square of the high frequency input voltage, and a high-frequency signal. The detection circuit has a first lowpass filter, a first operational amplifier configured to amplify error between an output voltage of the first lowpass filter and the reference voltage and output the error as a control voltage, and a feedback transistor configured to feed a feedback current according to the control voltage back to an output terminal of the square signal generator.
    Type: Application
    Filed: March 22, 2011
    Publication date: January 12, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takayuki Teraguchi, Masahiro Hasegawa, Noriyoshi Odaki, Shigehiro Hosoi, Takahiro Nakagawa
  • Patent number: RE46753
    Abstract: Provision of an intermediate shaft and a torque meter between a test product and a dynamometer in a transmission testing device in which the test product is set in an environmental chamber leads to a long axial length and thereby requires a large floor area for setting, and also causes a twisting of a shaft and leads to a poor rigidity. A hollow spacer is provided between a face plate of the environmental chamber and a test product attachment holder to which the test product is attached. A flange with an H-shape in side view is disposed in the hollow of the spacer. The flange has an end connected to an adaptor flange fixed to the test product, and another end connected to a rotating shaft of the dynamometer via the torque meter.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: March 13, 2018
    Assignee: MEIDENSHA CORPORATION
    Inventor: Takahiro Nakagawa