Granted Patent
Utility
US 6,428,813 · App. 09/380,939
Gastrointestinal mucosa-adherent pharmaceutical composition
Inventors:
Yohko Akiyama, Naoki Nagahara, Megumi Kitano, Masafumi Nakao
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Sep 10, 1999
Inventors
Yohko Akiyama
Naoki Nagahara
Megumi Kitano
Masafumi Nakao
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.