Granted Patent
Utility
US 4,684,651 · App. 06/352,716
Alkylenedioxybenzene and acid addition salts thereof useful as hypotensives
Inventors:
Ryoji Kikumoto, Harukazu Fukami, Kenichiro Nakao, Mamoru Sugano
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Feb 26, 1982
Inventors
Ryoji Kikumoto
Harukazu Fukami
Kenichiro Nakao
Mamoru Sugano
Assignee (at issue)
Mitsubishi 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.