Granted Patent
Utility
US 5,424,320 · App. 08/081,528
Heteroaryl coumarins as inhibitors of leukotriene biosynthesis
Inventors:
Rejean Fortin, Yves Girard, Erich L. Grimm, John Howard Hutchinson, John Scheigetz
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Jun 23, 1993
Inventors
Rejean Fortin
Yves Girard
Erich L. Grimm
John Howard Hutchinson
John Scheigetz
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.