Granted Patent
Utility
US 5,593,694 · App. 08/211,587
Sustained release tablet
Inventors:
Tomohiro HAYASHIDA, Kadoya Kikumaru, Omura Tomoyuki
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Jun 24, 1994
Inventors
Tomohiro HAYASHIDA
Kadoya Kikumaru
Omura Tomoyuki
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.