Patents by Inventor Motoaki TATEYAMA

Motoaki TATEYAMA 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).

  • Process for producing purinone derivative
    Patent number: 10239879
    Abstract: According to the present invention, differently from well-known production methods, with the use of a different starting material, Ullmann condensation which may decrease the yield with an increase of a production scale can be avoided and thus 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one can be provided safely and stably with high reaction yield.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: March 26, 2019
    Assignee: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Ryo Suzuki, Atsushi Hiramatsu, Motoaki Tateyama, Hideyuki Sasahara
  • PROCESS FOR PRODUCING PURINONE DERIVATIVE
    Publication number: 20180079751
    Abstract: According to the present invention, differently from well-known production methods, with the use of a different starting material, Ullmann condensation which may decrease the yield with an increase of a production scale can be avoided and thus 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one can be provided safely and stably with high reaction yield.
    Type: Application
    Filed: April 8, 2016
    Publication date: March 22, 2018
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Ryo SUZUKI, Atsushi HIRAMATSU, Motoaki TATEYAMA, Hideyuki SASAHARA