Patents by Inventor Tatsushi Okamoto

Tatsushi Okamoto 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: 20220235492
    Abstract: Provided is a polyethylene fiber having outstanding anti-creep characteristics while having high strength. The present invention provides an ultra-high molecular weight polyethylene fiber including ethyl branches as side chains, characterized in that the ratio {(C2H5/1000C)/(elongation stress)} of the number of ethyl branches per 1,000 carbon atoms (C2H5/1000C) to the elongation stress of the polyethylene fiber (MPa) is 2 to 30 branches/1,000 carbon atoms/MPa.
    Type: Application
    Filed: May 13, 2020
    Publication date: July 28, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Akihisa Furuta, Yasunori Fukushima, Tatsushi Okamoto
  • Patent number: 10934644
    Abstract: To provide a net-like structure having excellent low resilience characteristics, cushioning properties, and durability. The net-like structure has a three-dimensional random loop bonded structure constituted of a continuous linear body made of a thermoplastic elastomer having a fiber diameter of 0.1-3.0 mm and a styrene content of 10-40 mass %, the net-like structure having an apparent density of 0.005-0.30 g/cm3 and a 40° C. compression residual strain of less than or equal to 35%.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: March 2, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Teruyuki Taninaka, Takahiro Kuramoto, Shinichi Kobuchi, Hiroyuki Wakui, Tatsushi Okamoto, Akifumi Yasui
  • Patent number: 10394644
    Abstract: A processor system includes a master processor that successively processes a plurality of tasks, a checker processor that successively processes at least one of the plurality of tasks, and a control circuit that performs control so that the checker processor operates when the master processor and the checker processor perform a lock-step operation, and the checker processor stops its operation when the master processor and the checker processor do not perform the lock-step operation, the lock-step operation being an operation in which each of the master and checker processors processes the same task, in which the control circuit performs control so that a period from when a task is processed by the lock-step operation to when another task is processed in the next lock-step operation is equal to or shorter than a maximum test period, the maximum test period being a test period acceptable to the processor system.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: August 27, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Tatsushi Okamoto
  • Publication number: 20180237968
    Abstract: To provide a net-like structure having excellent low resilience characteristics, cushioning properties, and durability. The net-like structure has a three-dimensional random loop bonded structure constituted of a continuous linear body made of a thermoplastic elastomer having a fiber diameter of 0.1-3.0 mm and a styrene content of 10-40 mass %, the net-like structure having an apparent density of 0.005-0.30 g/cm3 and a 40° C. compression residual strain of less than or equal to 35%.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 23, 2018
    Applicant: TOYOBO CO., LTD.
    Inventors: Teruyuki Taninaka, Takahiro Kuramoto, Shinichi Kobuchi, Hiroyuki Wakui, Tatsushi Okamoto, Akifumi Yasui
  • Publication number: 20180046530
    Abstract: A processor system includes a master processor that successively processes a plurality of tasks, a checker processor that successively processes at least one of the plurality of tasks, and a control circuit that performs control so that the checker processor operates when the master processor and the checker processor perform a lock-step operation, and the checker processor stops its operation when the master processor and the checker processor do not perform the lock-step operation, the lock-step operation being an operation in which each of the master and checker processors processes the same task, in which the control circuit performs control so that a period from when a task is processed by the lock-step operation to when another task is processed in the next lock-step operation is equal to or shorter than a maximum test period, the maximum test period being a test period acceptable to the processor system.
    Type: Application
    Filed: October 25, 2017
    Publication date: February 15, 2018
    Inventor: Tatsushi Okamoto
  • Patent number: 9848669
    Abstract: A bicycle cleat positioning device includes a shoe holder, a cleat holder, and an attachment portion. A bicycle shoe is mounted to the shoe holder. The cleat holder is adjustably arranged relative to the shoe holder. The attachment portion supports the cleat holder relative to the shoe holder. The cleat holder is detachably and rotatable mounted to the attachment portion.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: December 26, 2017
    Assignee: Shimano Inc.
    Inventors: Tatsushi Okamoto, Junichi Kikuta, Tomohiro Nagata
  • Patent number: 9823957
    Abstract: A processor system includes a master processor that successively processes a plurality of tasks, a checker processor that successively processes at least one of the plurality of tasks, and a control circuit that performs control so that the checker processor operates when the master processor and the checker processor perform a lock-step operation, and the checker processor stops its operation when the master processor and the checker processor do not perform the lock-step operation, the lock-step operation being an operation in which each of the master and checker processors processes the same task, in which the control circuit performs control so that a period from when a task is processed by the lock-step operation to when another task is processed in the next lock-step operation is equal to or shorter than a maximum test period, the maximum test period being a test period acceptable to the processor system.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: November 21, 2017
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Tatsushi Okamoto
  • Publication number: 20160055047
    Abstract: A processor system includes a master processor that successively processes a plurality of tasks, a checker processor that successively processes at least one of the plurality of tasks, and a control circuit that performs control so that the checker processor operates when the master processor and the checker processor perform a lock-step operation, and the checker processor stops its operation when the master processor and the checker processor do not perform the lock-step operation, the lock-step operation being an operation in which each of the master and checker processors processes the same task, in which the control circuit performs control so that a period from when a task is processed by the lock-step operation to when another task is processed in the next lock-step operation is equal to or shorter than a maximum test period, the maximum test period being a test period acceptable to the processor system.
    Type: Application
    Filed: July 21, 2015
    Publication date: February 25, 2016
    Inventor: Tatsushi Okamoto
  • Publication number: 20130333124
    Abstract: A bicycle cleat positioning device includes a shoe holder, a cleat holder, and an attachment portion. A bicycle shoe is mounted to the shoe holder. The cleat holder is adjustably arranged relative to the shoe holder. The attachment portion supports the cleat holder relative to the shoe holder. The cleat holder is detachably and rotatable mounted to the attachment portion.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 19, 2013
    Applicant: SHIMANO INC.
    Inventors: Tatsushi OKAMOTO, Junichi KIKUTA, Tomohiro NAGATA
  • Patent number: 8376897
    Abstract: An internally geared hub is provided with a hub axle, a hub shell, a driver, a planetary gear mechanism and a gear changing mechanism. The hub shell rotates freely about the hub axle. The driver rotates freely relative to both the hub axle and the hub shell. The planetary gear mechanism is operatively connected between the hub shell and the driver. The planetary gear mechanism includes a plurality of driver rotation transmission paths that transmits rotation of the driver in a prescribed operating direction to the hub shell, and a hub shell rotation transmission path that transmits rotation of the hub shell in the prescribed operating direction to the driver. The gear changing mechanism is operatively connected the planetary gear mechanism for selectively establishing one of the driver rotation transmission paths or the hub shell rotation transmission path.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: February 19, 2013
    Assignee: Shimano Inc.
    Inventors: Akihiko Shoge, Tatsushi Okamoto, Naoto Migita
  • Publication number: 20110009231
    Abstract: An internally geared hub is provided with a hub axle, a hub shell, a driver, a planetary gear mechanism and a gear changing mechanism. The hub shell rotates freely about the hub axle. The driver rotates freely relative to both the hub axle and the hub shell. The planetary gear mechanism is operatively connected between the hub shell and the driver. The planetary gear mechanism includes a plurality of driver rotation transmission paths that transmits rotation of the driver in a prescribed operating direction to the hub shell, and a hub shell rotation transmission path that transmits rotation of the hub shell in the prescribed operating direction to the driver. The gear changing mechanism is operatively connected the planetary gear mechanism for selectively establishing one of the driver rotation transmission paths or the hub shell rotation transmission path.
    Type: Application
    Filed: November 24, 2009
    Publication date: January 13, 2011
    Applicant: SHIMANO INC.
    Inventors: Akihiko SHOGE, Tatsushi OKAMOTO, Naoto MIGITA
  • Patent number: 7757581
    Abstract: A bicycle gear shifter is provided with a mounting part, a connector guide part, a winding member, an operating member, an inner wire connector and a connecting cable. The mounting part includes a handlebar mounting structure and a wire guiding structure extending from the handlebar mounting structure. The wire guiding structure includes a wire movement space extending to an outer casing stop with the connector guide part disposed therein. The inner wire connector moves inside the wire movement space along the connector guide part. The inner wire connector detachably holds an end of an inner wire of a gear shift cable. The connecting cable is connected to the winding member and the inner wire connector to move the inner wire connector in response to movement of the winding member.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: July 20, 2010
    Assignee: Shimano Inc.
    Inventor: Tatsushi Okamoto
  • Publication number: 20080110288
    Abstract: A bicycle gear shifter is provided with a mounting part, a connector guide part, a winding member, an operating member, an inner wire connector and a connecting cable. The mounting part includes a handlebar mounting structure and a wire guiding structure extending from the handlebar mounting structure. The wire guiding structure includes a wire movement space extending to an outer casing stop with the connector guide part disposed therein. The inner wire connector moves inside the wire movement space along the connector guide part. The inner wire connector detachably holds an end of an inner wire of a gear shift cable. The connecting cable is connected to the winding member and the inner wire connector to move the inner wire connector in response to movement of the winding member.
    Type: Application
    Filed: July 24, 2007
    Publication date: May 15, 2008
    Applicant: SHIMANO INC.
    Inventor: Tatsushi Okamoto