Granted Patent
Utility
US 6,180,792 · App. 09/481,535
Condensed-ring thiophene derivatives and thienopyrimide derivatives, their production and use
Inventors:
Shuichi Furuya, Nobuo Choh, Koichi Kato, Shuji Hinuma
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Jan 12, 2000
Inventors
Shuichi Furuya
Nobuo Choh
Koichi Kato
Shuji Hinuma
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.