Granted Patent
Utility
US 5,472,964 · App. 08/260,592
Diaryl 5,6-fused heterocyclic acids as leukotriene antagonists
Inventors:
Robert N. Young, Marc Labelle, Yves LeBlanc, Yi Bin Xiang, Cheuk K. Lau, Claude Dufresne, Yves Gareau
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Jun 16, 1994
Inventors
Robert N. Young
Marc Labelle
Yves LeBlanc
Yi Bin Xiang
Cheuk K. Lau
Claude Dufresne
Yves Gareau
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.