Patents by Inventor Kouzi Tamura

Kouzi Tamura 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).

  • Process for the manufacture of hydrogen sulfide
    Patent number: 5173285
    Abstract: The present invention relates to a process for the manufacture of hydrogen sulfide by reacting sulfur and hydrogen which comprises two hydrogenation reactions. The first hydrogenation reaction of the present invention comprises the steps of supplying hydrogen gas in a reactor containing sulfur at least a part of which is in a liquid phase at a temperature of not lower than 250.degree. C., and reacting the liquid sulfur and the hydrogen gas to produce a crude hydrogen sulfide effluent gas in the reactor. The sulfur vapor contained in the effluent gas is further reacted with fleshly added hydrogen gas in the second hydrogenation reaction to further concentrate the resulting hydrogen sulfide.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: December 22, 1992
    Assignee: JGC Corporation
    Inventors: Senji Takenaka, Seiichi Matsuoka, Tsutomu Toida, Takao Takinami, Nobuhiro Yamada, Kouzi Tamura