Granted Patent
Utility
US 5,763,619 · App. 08/697,010
Process for the production of tetrazolyl compounds
Inventors:
Yasushi Shida, Kokichi Yoshida
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Aug 16, 1996
Inventors
Yasushi Shida
Kokichi Yoshida
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.