Patents by Inventor Hisashi Irokawa

Hisashi Irokawa 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).

  • SENSOR UNIT, WORK MACHINE, COMMUNICATION METHOD, AND MANAGEMENT METHOD
    Publication number: 20230311292
    Abstract: The present invention improves the convenience of a work machine. A two-dimensional code 15a and a serial number 15b are marked on a name plate 15. The two-dimensional code 15a is a two-dimensional code indicating unique information such as the serial number of a work machine 1. A communication adapter 30 is connected to a battery pack mounting portion 2c of the work machine 1. The communication adapter 30 has a function of supplying power to the work machine 1 and a function of communicating with the work machine 1 and a PLC 60. A camera 67 reads the two-dimensional code 15a of the work machine 1, and transmits the serial number of the work machine 1 to the PLC 60. The PLC 60 transmits the serial number to the communication adapter 30. The work machine 1 stores the received serial number in its own internal memory.
    Type: Application
    Filed: July 9, 2021
    Publication date: October 5, 2023
    Applicant: Koki Holdings Co., Ltd.
    Inventors: Hisashi IROKAWA, Tomomasa NISHIKAWA, Shota TAKEUCHI, Kengo TAMURA
  • Portable electric power sander
    Patent number: D831458
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: October 23, 2018
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takafumi Itoh, Shinichi Kakefuda, Hisashi Irokawa
  • Engine
    Patent number: D849795
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: May 28, 2019
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takeshi Taniguchi, Shinichi Kakefuda, Youhei Kinugawa, Keisuke Ikeda, Hisashi Irokawa