Granted Patent
Utility
US 6,743,802 · App. 10/226,980
Alkyne-aryl phosphodiesterase-4 inhibitors
Inventors:
Daniel Guay, Mario Girard, Pierre Hamel, Sebastien Laliberte, Richard Friesen
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Aug 23, 2002
Inventors
Daniel Guay
Mario Girard
Pierre Hamel
Sebastien Laliberte
Richard Friesen
Assignee (at issue)
Merck Frosst Canada Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.