Granted Patent
Utility
US 5,865,799 · App. 08/899,053
Prefilled syringe
Inventors:
Nobuo Tanaka, Jotaro Kishimoto, Kotaro Wakamatsu, Takayuki Hagihara, Seiji Ohtani
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: Jul 23, 1997
Inventors
Nobuo Tanaka
Jotaro Kishimoto
Kotaro Wakamatsu
Takayuki Hagihara
Seiji Ohtani
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.