Patents by Inventor Toshiyuki Kanemasa

Toshiyuki Kanemasa 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).

  • Piperidine derivative having NMDA receptor antagonistic activity
    Patent number: 7786140
    Abstract: A piperidine derivative of the formula (I) is found to bind specifically with the NR1/NR2B receptor and usable as an analgesic (pain treatment drug). wherein X is OH or lower alkylsulfonyloxy; Ar is optionally substituted aryl or optionally substituted heteroaryl; n is an integer of 1 to 4; m is an integer of 0 to 1; R1 is hydrogen; R2 is OH or R1 and R2 taken together may form a single bond; excluding that 1) n is 2; m is 0; R1 and R2 taken together may form a single bond; and Ar is optionally substituted phenyl and 2) n is 3; m is 0; R1 and R2 taken together may form a single bond; and Ar is phenyl.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: August 31, 2010
    Assignee: Shionogi & Co., Ltd.
    Inventors: Toshisada Yano, Toshiyuki Kanemasa, Shoichi Yamamoto
  • Piperidine derivative having nmda receptor antagonistic activity
    Publication number: 20070082927
    Abstract: A piperidine derivative of the formula (I) is found to bind specifically with the NR1/NR2B receptor and usable as an analgesic (pain treatment drug). wherein X is OH or lower alkylsulfonyloxy; Ar is optionally substituted aryl or optionally substituted heteroaryl; n is an integer of 1 to 4; m is an integer of 0 to 1; R1 is hydrogen; R2 is OH or R1 and R2 taken together may form a single bond; excluding that 1) n is 2; m is 0; R1 and R2 taken together may form a single bond; and Ar is optionally substituted phenyl and 2) n is 3; m is 0; R1 and R2 taken together may form a single bond; and Ar is phenyl.
    Type: Application
    Filed: September 22, 2004
    Publication date: April 12, 2007
    Applicant: SHIONOGI & CO., LTD.
    Inventors: Toshisada Yano, Toshiyuki Kanemasa, Shoichi Yamamoto