Patents by Inventor Isao Takahashi, deceased

Isao Takahashi, deceased 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).

  • Inverter control method and its device
    Patent number: 7053569
    Abstract: An inverter controlling method is applied in a system comprising a single-phase rectification circuitry and three-phase inverter. The method determines a capacitance of a capacitor connected between output terminals of the single-phase rectification circuitry for allowing an output voltage of the single-phase rectification circuitry to pulsate at twice frequency with respect to a power frequency; controls the three-phase inverter for supplying output voltages or output currents from the three-phase inverter to a motor; and suppresses a current flowing into the capacitor from a power source via the single-phase rectification circuitry.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: May 30, 2006
    Assignees: Daikin Industries, Ltd.
    Inventors: Yuko Takahashi, legal representative, Miwa Jibiki, legal representative, Minako Takahashi, legal representative, Mamoru Takahashi, legal representative, Hiroyuki Yamai, Isao Takahashi, deceased