Patents by Inventor Hideaki Hara

Hideaki Hara 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).

  • Stage apparatus and exposure apparatus provided with the stage apparatus
    Patent number: 5839324
    Abstract: A stage apparatus comprises a pedestal, an X axis guide bar which is fixed on the pedestal, an X stage which is movable along an upper surface of the pedestal and the guide bar, and a Y stage which is placed over the X stage and movable along the pedestal in a direction of the Y axis. Vacuum-pre-loadable static pressure air bearings, in which pressures of vacuum ports are independently controllable, are provided on a surface of the X stage opposing to the pedestal and on another surface of the X stage opposing to the X axis guide bar. By using the stage apparatus, the electric power consumption of driving means for movable units can be reduced, the amount of heat generation can be reduced, and the bearing gap, can be adjusted highly accurately after assembling.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: November 24, 1998
    Assignee: Nikon Corporation
    Inventor: Hideaki Hara
  • Measuring apparatus for measuring an injected quantity of liquid
    Patent number: 5801308
    Abstract: A measuring apparatus according to the present invention for measuring an injected quantity of fuel at pilot injection in an internal combustion engine, particularly, a diesel engine, which performs main injection process after the pilot injection process, includes: an injection pump for injecting fuel every one injection period; a closed pressure vessel for temporarily storing the fuel injected from the injection pump; a detection unit for detecting change of pressure of the fuel within the pressure vessel; a volume-variable device having a predetermined volume and coupled to the pressure vessel; and a measurement control unit for measuring the injected quantity of the fuel at one injection period based on result of detection by the detection means, by calculating the injected quantity at pilot injection based on a ratio of the change of pressure within the pressure vessel at injection of the fuel and the change of the pressure within the pressure vessel caused by change of the predetermined volume before in
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: September 1, 1998
    Assignee: Denso Corporation
    Inventor: Hideaki Hara
  • Quinazoline derivative, processes for its production, and cerebral dysfunction remedying agent comprising it as active ingredient
    Patent number: 4877790
    Abstract: A quinazoline derivative represented by the following formula (I) ##STR1## or its pharmacologically acceptable acid addition salt and processes for production thereof. The quinazoline compound is used as a cerebral dysfunction remedying agent.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: October 31, 1989
    Assignee: Kanebo Limited
    Inventors: Ryuichi Iemura, Manabu Hori, Hiroshi Ohtaka, Takayuki Sukamoto, Hideaki Hara, Keizo Ito