Patents by Inventor Akihisa Sakata

Akihisa Sakata 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).

  • Method and system for precise discharge determination
    Patent number: 5878957
    Abstract: A method of controlling an amount of a material discharged via a discharge nozzle from a container containing the material by applying a high pressure gas via a gas line system to an inside of the container. A reference pressure is detected which is of a gas confined in a restricted space having a predetermined volume in the gas line system. A high pressure is detected which is of a gas applied to the inside of the container. A residual amount of the material in the container is measured based upon the reference pressure and the high pressure.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: March 9, 1999
    Assignee: NEC Corporation
    Inventors: Tsumoru Takado, Akihisa Sakata