Granted Patent
Utility
US 5,266,568 · App. 07/774,403
Hydroxyalkylquinoline ether acids as leukotriene antagonists
Inventors:
Michel Belley, Yves LeBlanc, Marc Labelle
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Oct 10, 1991
Inventors
Michel Belley
Yves LeBlanc
Marc Labelle
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.