Granted Patent
Utility
US 6,423,845 · App. 09/718,139
Process and intermediates to a tetrahydro-[1,8]- Naphthyridine
Inventors:
Nelo Rivera, Yi Xiao, Nobuyoshi Yasuda
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Nov 21, 2000
Inventors
Nelo Rivera
Yi Xiao
Nobuyoshi Yasuda
Assignee (at issue)
MERCK & CO., INC.
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.