Patents by Inventor Masahiko Okana

Masahiko Okana 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).

  • Quinazoline derivatives and drugs
    Patent number: 6794389
    Abstract: There is provided an excellent novel analgesic having an analgesic effect which is effective widely against a pain including a chronic pain or an allodynia accompanied with herpes zoster by acting on a nociceptin receptor. The present invention relates to a compound represented by the following formula: or a salt thereof.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: September 21, 2004
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Masahiko Okana, Kazuya Mori