Granted Patent
Utility
US 6,221,864 · App. 09/446,662
Prophylactic or therapeutic agent for diseases attributable to infection with helicobacters
Inventors:
Fumihiro Hirayama, Mitsuharu Sano, Nobuhiro Sakurai, Yoshito Yokoyama
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Dec 23, 1999
Inventors
Fumihiro Hirayama
Mitsuharu Sano
Nobuhiro Sakurai
Yoshito Yokoyama
Assignee (at issue)
Welfide Corporation
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.