Patents by Inventor Shigetada Hidaka

Shigetada Hidaka 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).

  • Patent number: 6004952
    Abstract: The object of the present invention is to provide a novel compound which has various biological activities and is useful for medical and animal drugs. The present invention provides a compound represented by the formula: ##STR1## wherein R.sup.1 is COOR.sup.4, CONR.sup.5 R.sup.6, CO--R.sup.7 --OR or CH.sub.2 OR.sup.8 ; R.sup.2 is hydrogen atom, alkyl, aralkyl, heteroaryl, heteroarylalkyl, COR.sup.13, COOR.sup.14, CONR.sup.15 R.sup.16 ; R.sup.3 is hydrogen atom or OR.sup.3 ; a broken line ( - - - ) represents the presence of a double bond when R.sup.3 is oxygen atom and the absence of a double bond when R.sup.3 is OR.sup.3, or a salt or metal chelete thereof.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: December 21, 1999
    Assignee: Shinogi & Co., Ltd.
    Inventors: Yoshio Hayase, Shinobu Kobayashi, Kazuo Ueda, Shigetada Hidaka
  • Patent number: 5707838
    Abstract: The invention is a compound of the formula: ##STR1## wherein M is a bivalent or trivalent metal ion, and X is OH or O.sup..crclbar.. The above compound of the present invention is useful for prevention or treatment of mycoplasmosis.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: January 13, 1998
    Assignee: Shionogi & Co., Ltd.
    Inventors: Reiji Takeda, Shigetada Hidaka, Shinobu Kobayashi, Yoshio Hayase, Mamoru Ozaki, Hiroshi Nakai