Patents by Inventor Hiroshi Demura

Hiroshi Demura 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: 4820022
    Abstract: A liquid crystal antidazzle mirror comprising discharging electrodes respectively provided at electrodes of liquid crystal electrodes, a grounding electrode opposed to the discharging electrodes for discharging a static electricity charged in the liquid crystal section between the discharging electrodes and the grounding electrode. Thus, the antidazzle mirror can protect itself against a static electricity.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: April 11, 1989
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Hiroshi Demura, Kazumi Hayashi, Yasuo Oyama, Sadao Kokubu, Kouji Takizawa, Shigeru Iguchi
  • Patent number: 4799769
    Abstract: A liquid crystal antidazzle mirror for turning OFF a power of a liquid crystal drive control circuit by a power switch provided between the liquid crystal drive control circuit and a power source comprising a capacitor of a predetermined capacity disposed between the power switch and the liquid crystal drive control circuit and connected in parallel between power lines to supply power from the capacitor to at least a mode memory circuit in the liquid crystal drive control circuit for a predetermined time determined by the discharging characteristic of the capacitor when the power switch is opened. Thus, the mirror can reset the set mode of the antidazzle mirror to the used mode immediately before a power switch is opened when the power switch is closed within a predetermined time after the power switch is opened.
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: January 24, 1989
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Demura, Akira Kawahashi, Kazumi Hayashi, Sadao Kokubu
  • Patent number: 4786145
    Abstract: A liquid crystal antidazzle mirror for supplying a power to liquid crystal drive control circuit when a key plate is inserted into a key cylinder which comprises a key position detecting switch for detecting that the key plate is inserted into the key cylinder, and an initializing circuit for initializing the liquid crystal drive control circuit to either special mode of predetermined antidazzle or dazzle state upon receiving a detection signal of the key position detecting switch. Thus, the antidazzle mirror can automatically initialize the antidazzle mirror to either special mode of a predetermined antidazzle and dazzle states when power is supplied from a battery.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: November 22, 1988
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Tokai Tika Denki Seisakusho
    Inventors: Hiroshi Demura, Akira Kawahashi, Yasuo Ohyama, Sadao Kokubu, Kouji Takizawa, Shigeru Iguchi