Granted Patent
Utility
US 5,731,006 · App. 08/697,166
Gastrointestinal mucosa-adherent granules, pharmaceutical preparations and a coating composition
Inventors:
Yohko Akiyama, Naoki Nagahara, Shin-ichiro Hirai
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Aug 20, 1996
Inventors
Yohko Akiyama
Naoki Nagahara
Shin-ichiro Hirai
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.