Patents by Inventor Masazumi Tomari

Masazumi Tomari 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).

  • Optically active benzoquinolizine compounds, process for preparing same, and antibacterial preparation containing same as active ingredient
    Patent number: 4946844
    Abstract: An optically active (+)-isomer of a benzoquinolizine compound of the formula [I], is provided: ##STR1## where X.sub.1 represents a halogen atom, and R.sub.1 and R.sub.2 represent lower alkyl groups, a physiologically acceptable salt thereof, or a hydrate of either of the foregoing compounds. The compounds [I]-(+) exhibit an excellent antibacterial activity. Also, the compounds exhibit high solubility in water. Therefore, the compounds of the present invention are usable for the treatment of infectious diseases and usable in aqueous liquid preparations such as injections.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: August 7, 1990
    Assignee: Tokyo Tanabe Co., Ltd.
    Inventors: Masazumi Tomari, Yasuhiro Nagamatsu, Senji Suzuki