Granted Patent
Utility
US 6,489,483 · App. 10/009,479
Process for the production of 2-pyridylpyridine derivatives
Inventors:
Hirokazu Suda, Ken Umihara
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Dec 13, 2001
Inventors
Hirokazu Suda
Ken Umihara
Assignee (at issue)
SANKIO CHEMICAL CO., 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.