Patents by Inventor Tomokazu Yuizono

Tomokazu Yuizono 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).

  • Novel thioamide derivatives containing a pyridazine group
    Patent number: 4242512
    Abstract: Novel pyridazine-containing thioamide derivatives of the formula ##STR1## wherein R.sub.1 is ##STR2## wherein A is hydrogen, methyl, phenyl or mercapto, and B is hydrogen or phenyl; R.sub.2 is hydrogen or methyl; R.sub.3 is hydrogen, methyl or phenyl; R.sub.4 is hydrogen or methyl; and n is zero or 1. The derivatives have outstanding gastric antisecretory activity.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: December 30, 1980
    Assignee: Morishita Pharmaceutical Co., Ltd.
    Inventors: Masahiro Takaya, Toshihiro Yamada, Tomokazu Yuizono