Granted Patent
Utility
US 6,319,916 · App. 08/051,831
Heterocyclic compounds, their production and use
Inventors:
Giichi Goto, Masaomi Miyamoto, Yuji Ishihara
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Apr 23, 1993
Inventors
Giichi Goto
Masaomi Miyamoto
Yuji Ishihara
Assignee (at issue)
Takeda Chemical Industries 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.