Granted Patent
Utility
US 4,876,246 · App. 07/183,944
Benzo[a]phenothiazines and hydro-derivatives for inhibiting leukotriene biosynthesis
Inventors:
Yvan Guindon, Yves Girard, Cheuk K. Lau, Rejean Fortin, Joshua Rokach, Christiane Yoakim
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Apr 20, 1988
Inventors
Yvan Guindon
Yves Girard
Cheuk K. Lau
Rejean Fortin
Joshua Rokach
Christiane Yoakim
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.