Granted Patent
Utility
US 5,736,522 · App. 08/340,421
Esculetin derivatives and method for manufacture thereof, use thereof, and pharmaceutical composition
Inventors:
Koju Watanabe, Koichi Niimura, Junko Miyagawa
Patented Case
View Patent ↗
Granted: Apr 7, 1998
Filed: Nov 15, 1994
Inventors
Koju Watanabe
Koichi Niimura
Junko Miyagawa
Assignee (at issue)
Kureha Chemical Industry 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.