Patents by Inventor Fumio Tamura

Fumio Tamura 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: 11958783
    Abstract: A composition including a binder and a variable thermal conductivity material satisfying a conditional expression 1, wherein a content of the variable thermal conductivity material is from 300 parts by weight to 10,000 parts by weight with respect to a content of 100 parts by weight of the binder: ?max/?25?1.2??[conditional expression 1] (wherein, ?25 represents a thermal conductivity at 25° C., and ?max represents the maximum value of a thermal conductivity at 200° C. or 500° C.).
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: April 16, 2024
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Satoshi Shimano, Atsunori Doi, Fumio Tamura
  • Patent number: 11921542
    Abstract: An electronic device includes a keyboard. The keyboard includes a base plate and keys disposed on a base plate. The base plate includes a back support plate, a membrane, and a backlight plate. The membrane and the backlight plate are disposed on two sides of the back support plate. The back support plate supports the membrane, the backlight plate, and the keys. In addition, a buffer structure is disposed on a surface of a side that is of the backlight plate and that faces the key. The back support plate is provided with a first through hole. The key is disposed on a side that is of the membrane and that is away from the back support plate. A protrusion is disposed on a side that is of the key and that faces the base plate. The key moves toward the base plate. The protrusion can press the buffer structure.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: March 5, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fumio Tamura, Yake Zou, Weiyong Huang, Pan He, Ryo Otsuka
  • Publication number: 20230359240
    Abstract: An electronic device includes a keyboard. The keyboard includes a base plate and keys disposed on a base plate. The base plate includes a back support plate, a membrane, and a backlight plate. The membrane and the backlight plate are disposed on two sides of the back support plate. The back support plate supports the membrane, the backlight plate, and the keys. In addition, a buffer structure is disposed on a surface of a side that is of the backlight plate and that faces the key. The back support plate is provided with a first through hole. The key is disposed on a side that is of the membrane and that is away from the back support plate. A protrusion is disposed on a side that is of the key and that faces the base plate. The key moves toward the base plate. The protrusion can press the buffer structure.
    Type: Application
    Filed: September 7, 2021
    Publication date: November 9, 2023
    Inventors: Fumio Tamura, Yake Zou, Weiyong Huang, Pan He, Ryo Otsuka
  • Publication number: 20230207235
    Abstract: Provided herein is a keyboard assembly that includes a keyboard substrate, a plurality of keycaps, and a plurality of lifting supports. Each keycap is connected to the keyboard substrate by using a lifting support. The keyboard substrate is connected to a bottom plate and a top plate, with the bottom plate including a key accommodation groove that further includes a concave slope. The lifting support is located in the key accommodation groove, with one end abutting against the concave slope and being capable of sliding on the concave slope. In a process in which the top plate rotates to a first specified location, the keyboard substrate is driven to move, the lifting support descends, and the keycap descends. In a process in which the top plate rotates to a second specified location, the keyboard substrate is driven to move.
    Type: Application
    Filed: February 20, 2023
    Publication date: June 29, 2023
    Inventors: Fumio TAMURA, Yake ZOU, Ryo OTSUKA
  • Publication number: 20200341507
    Abstract: An electronic device having a pointing stick is disclosed. The pointing stick includes a cap mounted on a stick. The cap has a first surface and a second surface opposite to the first surface. A bottomed hole recessed towards the second surface is formed in the first surface. The bottomed hole is composed of a bottom wall located between the first surface and the second surface, a side wall connecting the bottom wall and the first surface, and a contact portion protruding from the bottom wall toward the first surface. The contact portion is provided in a region away from an outer edge of the bottom wall.
    Type: Application
    Filed: April 22, 2020
    Publication date: October 29, 2020
    Inventor: Fumio Tamura
  • Patent number: 10768707
    Abstract: A slim electronic apparatus that can give a user a sufficient sense of clicking in response to a user's touch input operation is disclosed. The electronic apparatus includes a touch-operation unit for receiving a user's touch-input operation; a main body chassis having a support plate with a mounting face to movably mount the touch-operation unit; a vibrator for generating vibrations to the touch-operation unit; and a connector having a fixing part fixed to one of the touch-operation unit and the support plate, and a retained part retained to be movable relative to the other of the touch-operation unit and the support plate at least along one direction parallel to the mounting face.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: September 8, 2020
    Assignee: LENOVO (SINGAPORE) PTE LTD
    Inventor: Fumio Tamura
  • Patent number: 10751757
    Abstract: A vibration generation device is provided with a housing, a vibration target component provided to be movable relatively to the housing, an actuator which has a metal base portion, a metal movable portion, a beltlike shape memory alloy disposed between the base portion and the movable portion and in which, when the shape memory alloy receives current application to be changed so that the outer shape becomes small, the movable portion is pushed out in one direction of separating from the base portion in a state where the base portion abuts on a first wall surface of the housing, a resin holder component fixed to the vibration target component and abutting on a pushing surface facing the one direction of the movable portion, and an elastic member elastically energizing the movable portion in a direction opposite to the one direction.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: August 25, 2020
    Assignee: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Fumio Tamura, Kimio Kumada, Kazuyuki Kubota
  • Publication number: 20200262760
    Abstract: A composition including a binder and a variable thermal conductivity material satisfying a conditional expression 1, wherein a content of the variable thermal conductivity material is from 300 parts by weight to 10,000 parts by weight with respect to a content of 100 parts by weight of the binder: ?max/?25?1.2??[conditional expression 1] (wherein, ?25 represents a thermal conductivity at 25° C., and ?max represents the maximum value of a thermal conductivity at 200° C. or 500° C.
    Type: Application
    Filed: September 19, 2018
    Publication date: August 20, 2020
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Satoshi Shimano, Atsunori Doi, Fumio Tamura
  • Patent number: 10747340
    Abstract: A touch pad includes: a center button region; a first button region disposed adjacent to the center button region; a second button region disposed adjacent to the center button region on the opposite side of the first button region; a load sensor configured to detect load at least at the center button region, the first button region and the second button region; and a controller configured to determine a detection by the load sensor of load of a first upper-limit value or higher at least at one of the first and second button regions as a depressed state, and determine a detection by the load sensor of load of a second upper-limit value or higher at the center button region as a depressed state. The second upper-limit value and the first upper-limit value are different. Particularly, the second upper-limit value is larger than the first upper-limit value.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: August 18, 2020
    Assignee: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Fumio Tamura, Hidetoshi Mori
  • Publication number: 20200233507
    Abstract: A touch pad includes: a center button region; a first button region disposed adjacent to the center button region; a second button region disposed adjacent to the center button region on the opposite side of the first button region; a load sensor configured to detect load at least at the center button region, the first button region and the second button region; and a controller configured to determine a detection by the load sensor of load of a first upper-limit value or higher at least at one of the first and second button regions as a depressed state, and determine a detection by the load sensor of load of a second upper-limit value or higher at the center button region as a depressed state. The second upper-limit value and the first upper-limit value are different. Particularly, the second upper-limit value is larger than the first upper-limit value.
    Type: Application
    Filed: May 22, 2019
    Publication date: July 23, 2020
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Fumio Tamura, Hidetoshi Mori
  • Publication number: 20200130015
    Abstract: A vibration generation device is provided with a housing, a vibration target component provided to be movable relatively to the housing, an actuator which has a metal base portion, a metal movable portion, a beltlike shape memory alloy disposed between the base portion and the movable portion and in which, when the shape memory alloy receives current application to be changed so that the outer shape becomes small, the movable portion is pushed out in one direction of separating from the base portion in a state where the base portion abuts on a first wall surface of the housing, a resin holder component fixed to the vibration target component and abutting on a pushing surface facing the one direction of the movable portion, and an elastic member elastically energizing the movable portion in a direction opposite to the one direction.
    Type: Application
    Filed: January 8, 2019
    Publication date: April 30, 2020
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: Fumio Tamura, Kimio Kumada, Kazuyuki Kubota
  • Publication number: 20190377413
    Abstract: A slim electronic apparatus that can give a user a sufficient sense of clicking in response to a user's touch input operation is disclosed. The electronic apparatus includes a touch-operation unit for receiving a user's touch-input operation; a main body chassis having a support plate with a mounting face to movably mount the touch-operation unit; a vibrator for generating vibrations to the touch-operation unit; and a connector having a fixing part fixed to one of the touch-operation unit and the support plate, and a retained part retained to be movable relative to the other of the touch-operation unit and the support plate at least along one direction parallel to the mounting face.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 12, 2019
    Inventor: FUMIO TAMURA
  • Publication number: 20190377389
    Abstract: A low-cost electronic device capable of storing keycaps within a chassis is disclosed. The electronic device includes a support plate; a set of keycaps supported above the top face of the support plate, the keycaps moving up and down between the operating position and the storage position; and a frame functioning as a driving member that is movable relative to the keycaps in the direction parallel to the top face of the support plate. Each keycap has a pressure-receiving part. The frame has pressing parts that move relative to the keycaps to come in contact with the pressure-receiving parts.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 12, 2019
    Inventors: FUMIO TAMURA, MASATO ITOH, TABITO MIYAMOTO, YOSHIYUKI SHIBAYAMA
  • Patent number: 10438759
    Abstract: One aspect provides a key switch device including: a base plate; a sheet laminated on the base plate; a key top disposed above the sheet; and an elastic dome that is disposed between the sheet and the key top and is configured to press the sheet in response to the key top being pressed down. Other aspects are described and claimed.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: October 8, 2019
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Fumio Tamura, Kenshin Yonemochi
  • Patent number: 9983633
    Abstract: An electronic device disclosed. The electronic device includes a first chassis, a second chassis, and a hinge mechanism that connects the first chassis and the second chassis. The electronic device also includes a cylindrical cam member, a slide member and a movable member that moves in conjunction with a movement of the slide member in the axial direction and which extends from and retracts to an outer surface of the first chassis.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: May 29, 2018
    Assignee: LENOVO (SINGAPORE) PTE LTD
    Inventors: Fumio Tamura, Yoshiyuki Shibayama, Ryo Otsuka, Eiji Shinohara
  • Patent number: 9934916
    Abstract: A keyboard device for a portable computer is disclosed. The portable computer includes a main body chassis and a display chassis. The main body chassis contains the keyboard device having multiple keycaps elastically supported to be moved up and down. Coupled to the main body chassis via a hinge, the display chassis contains a display. The main body chassis also includes a key depressing mechanism having a rotating shaft member provided along each of the keycaps and a pressing piece projecting from the outer circumferential surface of the rotating shaft member to the side of the keycap to allow a receiving part provided in the keycap to be depressed downward. The rotating shaft member rotates about the axis to cause the pressing piece to push down the receiving part and, in turn, pushing down and keeping the keycap in a depressed position.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: April 3, 2018
    Assignee: Lenovo (Singapore) PTE LTD
    Inventors: Fumio Tamura, Hiroaki Agata, Takane Fujino, Eiji Shinohara
  • Publication number: 20180017989
    Abstract: An electronic device disclosed. The electronic device includes a first chassis, a second chassis, and a hinge mechanism that connects the first chassis and the second chassis. The electronic device also includes a cylindrical cam member, a slide member and a movable member that moves in conjunction with a movement of the slide member in the axial direction and which extends from and retracts to an outer surface of the first chassis.
    Type: Application
    Filed: November 1, 2016
    Publication date: January 18, 2018
    Inventors: Fumio Tamura, Yoshiyuki Shibayama, Ryo Otsuka, Eiji Shinohara
  • Publication number: 20160334835
    Abstract: A keyboard device for a portable computer is disclosed. The portable computer includes a main body chassis and a display chassis. The main body chassis contains the keyboard device having multiple keycaps elastically supported to be moved up and down. Coupled to the main body chassis via a hinge, the display chassis contains a display. The main body chassis also includes a key depressing mechanism having a rotating shaft member provided along each of the keycaps and a pressing piece projecting from the outer circumferential surface of the rotating shaft member to the side of the keycap to allow a receiving part provided in the keycap to be depressed downward. The rotating shaft member rotates about the axis to cause the pressing piece to push down the receiving part and, in turn, pushing down and keeping the keycap in a depressed position.
    Type: Application
    Filed: May 12, 2016
    Publication date: November 17, 2016
    Inventors: FUMIO TAMURA, HIROAKI AGATA, TAKANE FUJINO, EIJI SHINOHARA
  • Patent number: 9465449
    Abstract: A pointing device is attached to a keyboard assembly. The pointing device includes an operation post; a sensor substrate that converts force applied to the operation post into an analog electric signal; a logic substrate that is attached to a rear surface of the keyboard assembly and generates a digital signal to move a cursor from the electric signal; and a cable that connects the sensor substrate and the logic substrate to each other. It is possible to reduce the area of a portion protruding to a lower side from the rear surface of the keyboard assembly in the vicinity of the operation post and to lower the height of the portion by separating the sensor substrate and the logic substrate from each other. Since the cable is separated from a motherboard, it is possible to reduce noise entering the cable which transmits an analog signal.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: October 11, 2016
    Assignee: Lenovo (Singapore) PTE. LTD.
    Inventors: Fumio Tamura, Takahide Wada
  • Publication number: 20140225830
    Abstract: A pointing device is attached to a keyboard assembly. The pointing device includes an operation post; a sensor substrate that converts force applied to the operation post into an analog electric signal; a logic substrate that is attached to a rear surface of the keyboard assembly and generates a digital signal to move a cursor from the electric signal; and a cable that connects the sensor substrate and the logic substrate to each other. It is possible to reduce the area of a portion protruding to a lower side from the rear surface of the keyboard assembly in the vicinity of the operation post and to lower the height of the portion by separating the sensor substrate and the logic substrate from each other. Since the cable is separated from a motherboard, it is possible to reduce noise entering the cable which transmits an analog signal.
    Type: Application
    Filed: February 12, 2014
    Publication date: August 14, 2014
    Applicant: LENOVO (Singapore) PTE, LTD.
    Inventors: Fumio Tamura, Takahide Wada