Patents by Inventor Hitonaga Nakano

Hitonaga Nakano 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).

  • Test apparatus for measuring concentration of test substance in liquid
    Patent number: 5320734
    Abstract: A test apparatus for measuring concentration of test solution, in which a thin sheet having a plurality of through holes and diffusion-limiting membranes to cover corresponding through hole, is movably installed, and one or two openings for deposition and a concentration measuring section are disposed in a thin sheet moving direction.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: June 14, 1994
    Assignee: Daikin Industries, Ltd.
    Inventors: Koichi Yamasaki, Tatsuhiko Osaka, Hitonaga Nakano, Toji Mukai, Yasuhiro Nagata, deceased, Sadaaki Nakaoka, Susumu Fujita, Yoichi Hamada