Patents by Inventor Ryokichi Koyama

Ryokichi Koyama 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).

  • Heterocyclic compound
    Patent number: 9156837
    Abstract: A heterocyclic compound having an ROR?t inhibitory activity, which is a compound of formula (I) or a salt thereof is provided. The compound has ring A, which is an optionally substituted cyclic group and is bound to a pyrazole ring though Q. Q is a bond, optionally substituted C1-10 alkylene, optionally substituted C2-10 alkenylene, or optionally substituted C2-10 alkynylene. R1 is a substituent. Ring B is a thiazole ring, an isothiazole ring or a dihydrothiazole ring, each of which is optionally further substituted by a substituent in addition to R2.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: October 13, 2015
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Satoshi Yamamoto, Junya Shirai, Atsuko Ochida, Yoshiyuki Fukase, Yoshihide Tomata, Ayumu Sato, Shotaro Miura, Kazuko Yonemori, Ryokichi Koyama
  • HETEROCYCLIC COMPOUND
    Publication number: 20140163001
    Abstract: Provided is a heterocyclic compound having an ROR?t inhibitory activity.
    Type: Application
    Filed: July 27, 2012
    Publication date: June 12, 2014
    Applicant: Takeda Pharmaceutical Company Limited
    Inventors: Satoshi Yamamoto, Junya Shirai, Atsuko Ochida, Yoshiyuki Fukase, Yoshihide Tomata, Ayumu Sato, Shotaro Miura, Kazuko Yonemori, Ryokichi Koyama