Granted Patent
Utility
US 5,576,021 · App. 08/275,240
Sustained-release multi-granule tablet
Inventors:
Hidenobu Andoh, Sumio Watanabe, Yasuo Miyake
Patented Case
View Patent ↗
Granted: Nov 19, 1996
Filed: Jul 15, 1994
Inventors
Hidenobu Andoh
Sumio Watanabe
Yasuo Miyake
Assignee (at issue)
Eisai Inc.
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.