Patents by Inventor Keni Ni

Keni Ni 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).

  • Imidazo[1,2-a]pyridine derivative
    Patent number: 8822688
    Abstract: [Problem] To provide a compound useful as medicine having PDE4B inhibitory activity, in particular, as an active ingredient of a composition for treating or preventing schizophrenia, Alzheimer's disease, dementia, depression and the like. [Measures for Solution] The present inventors examined compounds having PDE4B inhibitory activity and found that a tricyclic or tetracyclic imidazo[1,2-a]pyridine derivative or salts thereof had a superior PDE4B inhibitory activity, thereby completing the present invention. The imidazo[1,2-a]pyridine derivative can be used as an agent for treating or preventing schizophrenia, Alzheimer's disease, dementia, depression and the like.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: September 2, 2014
    Assignee: Astellas Pharma Inc.
    Inventors: Kiyohiro Samizu, Naoyuki Masuda, Kazuhiko Iikubo, Yohei Koganemaru, Noriyuki Kawano, Junya Ohmori, Yasuyuki Mitani, Keni Ni