Patents by Inventor Seishiro Tanaka

Seishiro Tanaka 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).

  • Phenylguanidine acetylsalicylate compounds, process for production thereof, and pharmaceutical composition thereof
    Patent number: 4324801
    Abstract: A compound of the formula ##STR1## wherein R.sub.1 is a member selected from the group consisting of a hydrogen atom, lower alkyl groups and lower alkoxy groups, R.sub.2 is a member selected from the group consisting of a hydrogen atom, halogen atoms, lower alkyl groups, a hydroxyl group and a trifluoromethyl group, R.sub.3 is a member selected from the group consisting of a hydrogen atom, halogen atoms, lower alkyl groups, lower alkoxy groups, an acetyl group, a carbamoyl group and lower alkyl carboxylate groups, and R.sub.4 represents a hydrogen atom or a halogen atom, a pharmaceutical composition comprising such a phenylguanidine acetylsalicylate compound as an active ingredient; and a process for production of aforesaid compound.
    Type: Grant
    Filed: April 21, 1981
    Date of Patent: April 13, 1982
    Assignee: Banyu Pharmaceutical Co. Ltd.
    Inventors: Meiki Matsuzaki, Hiroshi Okabe, Seishiro Tanaka, Takao Takiguchi, Kunikatsu Onodera