Patents Assigned to R-Tech Ueno
  • Endothelin antagonist
    Patent number: 6242485
    Abstract: An endothelin antagonist comprising as the active ingredient a prostanoic acid derivative wherein the &agr;-chain has eight or more skeletal carbon atoms.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: June 5, 2001
    Assignee: R-Tech Ueno
    Inventor: Ryuji Ueno