Patents by Inventor Tomio Yamakoshi

Tomio Yamakoshi 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).

  • Apparatus and method for measuring adsorption/desorption
    Patent number: 5109716
    Abstract: The actual flow rate of gas to the solid-sample container or to the gas reservoir can be precisely obtained according to variances in the pressure of the gas reservoir without directly adjusting the flow rate precisely. The volume of gas not adsorbed in the sample container can be obtained from the pressure in the sample container. The adsorption can easily be determined from the difference between the flow rate of gas and the volume of gas not adsorbed in the sample container. Even if the flow rate fluctuates, the adsorption can precisely be obtained. The desorption can easily be obtained in the same way. Gas is exhausted from the gas reservoir in advance. When desorbed gas in the sample container is continuously exhausted to the gas reservoir, the pressure in the gas reservoir is measured.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: May 5, 1992
    Assignee: Fuji-Davison Chemical Ltd.
    Inventors: Mutsuhiro Ito, Toshiyasu Abe, Ryuji Orii, Tomio Yamakoshi