Patents by Inventor Kentaro Yasuda

Kentaro Yasuda 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).

  • Power semiconductor module
    Patent number: 9000601
    Abstract: The respective main electrodes of the semiconductor switching elements such as IGBTs, which are respectively mounted on the plurality of insulating boards, are electrically connected to each other via the conductor member. This configuration makes it possible to suppress the occurrence of the resonant voltage due to the junction capacity and the parasitic inductance of each semiconductor switching element.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: April 7, 2015
    Assignee: Hitachi Power Semiconductor Device, Ltd.
    Inventors: Katsunori Azuma, Kentaro Yasuda, Takahiro Fujita, Katsuaki Saito, Yoshihiko Koike, Michiaki Hiyoshi
  • POWER SEMICONDUCTOR MODULE
    Publication number: 20130001805
    Abstract: The respective main electrodes of the semiconductor switching elements such as IGBTs, which are respectively mounted on the plurality of insulating boards, are electrically connected to each other via the conductor member. This configuration makes it possible to suppress the occurrence of the resonant voltage due to the junction capacity and the parasitic inductance of each semiconductor switching element.
    Type: Application
    Filed: June 26, 2012
    Publication date: January 3, 2013
    Inventors: Katsunori AZUMA, Kentaro Yasuda, Takahiro Fujita, Katsuaki Saito, Yoshihiko Koike, Michiaki Hiyoshi
  • Triple-wrap traction arrangement
    Patent number: 4753322
    Abstract: A traction elevator rope (4) is helically wrapped about at least 360.degree. of the periphery of a drive sheave (2) to provide sufficient traction for low-speed elevator operations without excessive wear or seizing and to provide sufficient traction in high-speed elevator operations without excessive wear or high drive sheave loading.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: June 28, 1988
    Assignee: Otis Elevator Company
    Inventor: Kentaro Yasuda
  • Method and apparatus for measuring interior sheave groove dimensions
    Patent number: 4459754
    Abstract: A metal tape containing diameter graduations along the tape is wrapped around the groove in a sheave. The tape contains spaced apart supports which precisely position the tape at a certain depth in the groove. The intersection of the two ends of the tape indicate the diameter of the groove. The ends have vernier graduations.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: July 17, 1984
    Assignee: Otis Elevator Company
    Inventors: Kentaro Yasuda, Albert J. Saxer, Janis J. Cilderman