Patents by Inventor Sumio Iwashima

Sumio Iwashima 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 apparatus for supporting the operation under radioactive rays
    Patent number: 5077685
    Abstract: Radioactivity exposure amount of workcraftmen is obtained through simulation by using an operation processor when the workcraftmen carry out work operation within an area under controlled radioactivity. The movement of the workcraftmen carrying out work operation in the area under controlled radioactivity is simulated by making use of layout graphic data relating to the area. The radioactivity exposure amount of the workcraftmen is calculated in response to the simulated movement of the workcraftmen. The operation procedures of the target work operation for radioactivity exposure amount calculation is outputted from the operation processor, when the calculated radioactivity exposure amount satisfies a predetermined value.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: December 31, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Sumio Iwashima, Toshiaki Yoshinaga, Kouichi Ushiroda, Hiroshi Takano