Granted Patent
Utility
US 5,047,521 · App. 07/150,407
5-fluorouracil derivatives
Inventors:
Setsuro Fujii, Mitsuru Hirohashi, Yoshihito Yamamoto, Yutaka Kojima
Patented Case
View Patent ↗
Granted: Sep 10, 1991
Filed: Feb 9, 1988
Inventors
Setsuro Fujii
Mitsuru Hirohashi
Yoshihito Yamamoto
Yutaka Kojima
Assignee (at issue)
OTSUKA PHARMACEUTICAL 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.