Patents by Inventor You Oosawa

You Oosawa 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 temperature control system, method of controlling steam temperature and power plant using the same
    Patent number: 7028480
    Abstract: A steam temperature control system for a power plant for controlling a temperature of steam flowing through steam pipes connected to a heat exchanger to a target temperature by spraying water by means of a spray valve of an attemperator, having a target temperature calculation section for calculating the target temperature of the steam for determining the target temperatures of the plural steam pipes connected to the heat exchanger in respective steam pipes connected to a common heat exchanger; and an instruction value calculation section for calculating command values to the spray valves disposed to the respective steam pipes, based on the target temperatures determined by the calculation in the target temperature calculating section.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: April 18, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Takaaki Sekiai, Satoru Shimizu, You Oosawa
  • Steam temperature control system, method of controlling steam temperature and power plant using the same
    Publication number: 20050274113
    Abstract: A steam temperature control system for a power plant for controlling a temperature of steam flowing through steam pipes connected to a heat exchanger to a target temperature by spraying water by means of a spray valve of an attemperator, having a target temperature calculation section for calculating the target temperature of the steam for determining the target temperatures of the plural steam pipes connected to the heat exchanger in respective steam pipes connected to a common heat exchanger; and an instruction value calculation section for calculating command values to the spray valves disposed to the respective steam pipes, based on the target temperatures determined by the calculation in the target temperature calculating section.
    Type: Application
    Filed: June 9, 2005
    Publication date: December 15, 2005
    Inventors: Takaaki Sekiai, Satoru Shimizu, You Oosawa