Granted Patent
Utility
US 4,849,421 · App. 07/162,935
Anti-anxiety benzothiepino(5,4-c]pyridazines
Inventors:
Toru Nakao, Minoru Kawakami, Minoru Obata, Kenji Morita
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Mar 2, 1988
Inventors
Toru Nakao
Minoru Kawakami
Minoru Obata
Kenji Morita
Assignee (at issue)
Yoshitomi Pharmaceutical 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.