Granted Patent
Utility
US 6,444,811 · App. 09/618,875
Pyrazinones, compositions containing such compounds and methods of use
Inventors:
Yongxin Han, Andre Giroux, Robert Zamboni, Daniel McKay, Christopher Bayly, Erich L. Grimm, John Colucci
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Jul 19, 2000
Inventors
Yongxin Han
Andre Giroux
Robert Zamboni
Daniel McKay
Christopher Bayly
Erich L. Grimm
John Colucci
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.