Patents Examined by Mark E Berch
  • Pharmaceutically active compounds
    Patent number: 6677335
    Abstract: Compounds of the formula (I): wherein R1, R2, R4 and R13 are as defined or a pharmaceutically or veterinarily acceptable salt or polymorph thereof, or a pharmaceutically or veterinarily acceptable solvate or pro-drug thereof: are potent and selective inhibitors of type 5 cyclic guanosine 3′,5′-monophosphate phosphodiesterase (cGMP PDE5) and have utility in the treatment of, inter alia, male erectile dysfunction (MED) and female sexual dysfunction (FSD).
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: January 13, 2004
    Assignee: Pfizer Inc
    Inventors: Mark Edward Bunnage, Keith Michael DeVries, Laurence James Harris, Philip Charles Levett, John Paul Mathias, Joanna Teresa Negri, Stephen Derek Albert Street, Albert Shaw Wood