Patents by Inventor Kuramoto Yasuhiro

Kuramoto Yasuhiro 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).

  • Quinolone derivative or salt thereof and antibacterial containing the same
    Patent number: 5412098
    Abstract: A quinolone derivative represented by the below-described formula (1), or a salt thereof: ##STR1## wherein R.sup.1 represents a hydrogen atom, or a carboxyl protective group, R.sup.2 represents a hydrogen atom, halogen atom or a lower alkyl group, X represents a hydrogen atom or a halogen atom, Y represents a halogen atom, a cyclic amino group which may have a substituent, a cyclo- lower alkenyl group which may have a substituent, or a group R.sup.3 --(CH.sub.2).sub.m --A-- (wherein R.sup.3 represents a hydrogen atom or an amino group which may have a substituent, A represents an oxygen atom or a sulfur atom and m represents a number of 0 to 3), Z represents a nitrogen atom or a group C--R.sup.4 (wherein R.sup.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: May 2, 1995
    Assignees: Wakunaga Seiyaku Kabushiki Kaisha, Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kuramoto Yasuhiro, Noda Shuichiro, Shinobu Maruyama, Shunso Hatono, Haruyo Mochizuki, Akira Yazaki