Patents by Inventor Hirohito Hira

Hirohito Hira 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 for absorbing moisture of composite material
    Patent number: 6393726
    Abstract: A method for absorbing the moisture of a composite material, which can absorb the moisture of the composite material in a short period of time and which can provide a moisture absorption distribution which is equal to that of a composite material placed under actual environment. At time table, having a plurality of different environment conditions for pressure, temperature and humidity, and periods of time corresponding to the environment conditions, is previously prepared. Then, a composite material is put in a pressure vessel, and the environmental conditions in the pressure vessel are changed on the basis of the time table. Thus, the moisture absorption state of the composite material can be equal to that after the elapse of predetermined years under actual environment. In addition, it is possible to absorb the moisture of the composite material in a short period of time by absorbing the moisture of the composite material under an environment condition of high pressure.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: May 28, 2002
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Yutaka Momose, Shunichi Bandoh, Hirohito Hira