Patents by Inventor Nobuo Okita

Nobuo Okita 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).

  • Steam turbine
    Patent number: 6203274
    Abstract: The present invention is intended to implement a high-temperature, high-pressure, high-output, high/low-pressure integrated steam turbine provided with a turbine rotor formed as an integral rotor member. It is provided with a high-pressure turbine (3) to which primary steam (20) is supplied, a low-pressure turbine (5) having last-stage turbine rotor blades (47), a turbine rotor (2) formed of an integral rotor member, an integral casing (6), and a downward-exhaust type of exhaust chamber (15); it has a rated power of at least 100 MW; the last-stage turbine rotor blades are rotor blades of an effective blade length of at least 36 inches rotating at 3000 rpm, or are rotor blades of an effective blade length of at least 33.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: March 20, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masataka Kikuchi, Toru Takahashi, Nobuo Okita, Ryou Oda, Kenzo Matsuyama, Akira Sakuma