Patents by Inventor Mayu Shibazaki

Mayu Shibazaki 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: 6288064
    Abstract: The present invnetion provides a remedy for erectile dysfunction. The active ingredient thereof is a fused pyridazine compound represented by the following formula (I) or a pharmacologically acceptable salt thereof: (wherein the ring C represents a 5 or 6 membered ring optionally having hetero atom(s); n is an integer of from 1 to 4; R1 represents a hydrogen, a halogen, a cyano, etc.; A represents a hydrogen, a halogen, an optionally substituted amino, etc.; X represents a group represented by the formula —N═, etc.; and Y represents the formula —CO—, an optionally substituted amino, etc).
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: September 11, 2001
    Assignee: Eisai Co., Ltd.
    Inventors: Nobuhisa Watanabe, Yasuhiro Kabasawa, Shinya Abe, Mayu Shibazaki, Hiroki Ishihara, Kohtarou Kodama, Hideyuki Adachi