Patents by Inventor Tatsumi Sakazume

Tatsumi Sakazume 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).

  • Communication system
    Patent number: 6538558
    Abstract: A communication system capable of preventing a lost transmitter from being used by an unauthorized user for a bad purpose, and also capable of easily enabling the lost transmitter to be used again when it is found.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: March 25, 2003
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tatsumi Sakazume, Suguru Asakura, Noboru Seki
  • COMMUNICATION SYSTEM
    Publication number: 20010002813
    Abstract: The invention provides a communication system capable of preventing a lost transmitter from being used by an unauthorized user for a bad purpose, and also capable of easily enabling the lost transmitter to be used again when it is found somewhere.
    Type: Application
    Filed: September 19, 1997
    Publication date: June 7, 2001
    Inventors: NOBORU SEKI, TATSUMI SAKAZUME, SUGURU ASAKURA
  • Method for controlling automotive sliding doors
    Patent number: 6208102
    Abstract: In a method for controlling a powered sliding door system, a standard time period for the sliding door to pass a calibration interval defined near a fully closed position under a standard duty ratio condition is measured, and the duty ratio of the drive pulse signal for the motor in the remaining interval of operation is determined from this standard time period so that the sliding door may move at a prescribed speed irrespective of the load acting on the door. This control method can be favorably used in combination with the process of detecting an obstacle in the path of the sliding door, which is based on the detection in the reduction in the speed of the sliding door, without any interference between them.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: March 27, 2001
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Mitsuba Corporation
    Inventors: Taizo Kikuchi, Kazunari Ochi, Toru Namiki, Tatsumi Sakazume, Hiroshi Ono, Masami Sayama