Granted Patent
Utility
US 6,045,830 · App. 08/704,991
Method of production of sustained-release preparation
Inventors:
Yasutaka Igari, Shigeyuki Takada, Hiroshi Kosakai
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Aug 29, 1996
Inventors
Yasutaka Igari
Shigeyuki Takada
Hiroshi Kosakai
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.