Patents by Inventor Norihiro Oba

Norihiro Oba 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).

  • Mercury removal system, gasification system, gasification combined power generation system and mercury removal method
    Patent number: 9540577
    Abstract: Provided is a mercury removal system 1 provided in a powder supply system including a pulverizing machine 118 that pulverizes a hydrocarbon raw material, the mercury removal system including: a removal agent supply device 11 which supplies a mercury removal agent; and a mercury removal agent dust collector which collects the dust of the mercury removal agent, wherein a gas discharge line to which the dry flue gas is supplied is connected to the mercury removal agent dust collector, wherein the removal agent supply device includes a mercury removal agent supply line which supplies the mercury removal agent, and wherein the mercury removal agent supply line is connected to the upstream side of the mercury removal agent dust collector in the circulation direction of the dry flue gas.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: January 10, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Tetsuya Sawatsubashi, Yoshinori Koyama, Takashi Fujii, Takashi Iwahashi, Norihiro Oba, Koji Nishimura
  • MERCURY REMOVAL SYSTEM, GASIFICATION SYSTEM, GASIFICATION COMBINED POWER GENERATION SYSTEM AND MERCURY REMOVAL METHOD
    Publication number: 20150068189
    Abstract: Provided is a mercury removal system 1 provided in a powder supply system including a pulverizing machine 118 that pulverizes a hydrocarbon raw material, the mercury removal system including: a removal agent supply device 11 which supplies a mercury removal agent; and a mercury removal agent dust collector which collects the dust of the mercury removal agent, wherein a gas discharge line to which the dry flue gas is supplied is connected to the mercury removal agent dust collector, wherein the removal agent supply device includes a mercury removal agent supply line which supplies the mercury removal agent, and wherein the mercury removal agent supply line is connected to the upstream side of the mercury removal agent dust collector in the circulation direction of the dry flue gas.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 12, 2015
    Inventors: Tetsuya SAWATSUBASHI, Yoshinori KOYAMA, Takashi FUJII, Takashi IWAHASHI, Norihiro OBA, Koji NISHIMURA
  • Drive control system for servo motor
    Patent number: 5705907
    Abstract: A drive control system for supplying a drive voltage to a DC servo motor. The drive control system includes a position detector for detecting a rotational position of the DC servo motor, and a controller which switches the drive mode of the DC servo motor from DC drive to PWM drive when a detected position value obtained by the position detector is within a predetermined amount of a value corresponding to a target stop position.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: January 6, 1998
    Assignee: Alps Electric Co., Ltd.
    Inventors: Hiroyuki Miyamori, Norihiro Oba