Granted Patent
Utility
US 6,177,587 · App. 09/080,456
Production method of aminobenzene compound
Inventors:
Hideo Hashimoto, Tadashi Hanaoka, Masayasu Kato
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: May 19, 1998
Inventors
Hideo Hashimoto
Tadashi Hanaoka
Masayasu Kato
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.