Granted Patent
Utility
US 6,420,565 · App. 09/795,027
Process for making 2, 5-substituted pyridine
Inventors:
Paul O'Shea, Xin Wang, Richard D. Tillyer
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Feb 27, 2001
Inventors
Paul O'Shea
Xin Wang
Richard D. Tillyer
Assignees (at issue)
MERCK & CO., INC.
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.