Granted Patent
Utility
US 5,814,342 · App. 08/806,954
Prolonged release microcapsules
Inventors:
Hiroaki Okada, Yayoi Inoue, Yasuaki Ogawa
Patented Case
View Patent ↗
Granted: Sep 29, 1998
Filed: Feb 26, 1997
Inventors
Hiroaki Okada
Yayoi Inoue
Yasuaki Ogawa
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.