Patents by Inventor Michiro Hagiwara

Michiro Hagiwara 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 automatic analysis of fluid composition involving a time-dependent variation thereof
    Patent number: 5186895
    Abstract: An automatic analytical apparatus in which a series of operations ranging from the sampling into a treating receptacle, pretreatment, analysis and discharge of a fluid sample to the preparation for the next analysis are repeated automatically in order, wherein the time-dependent variation of the composition is traced successively. This permits the presence of the composition variation or the course of the composition variation to be confirmed or the composition variation to be controlled, automatically.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: February 16, 1993
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Mitsuo Onofusa, Nobuyoshi Hashimoto, Kimiteru Tagawa, Michiro Hagiwara