Granted Patent
Utility
US 5,464,939 · App. 07/942,358
Highly purified protein, production and use thereof
Inventors:
Kato Koichi, Yamada Takao, Onda Haruo
Patented Case
View Patent ↗
Granted: Nov 7, 1995
Filed: Sep 9, 1992
Inventors
Kato Koichi
Yamada Takao
Onda Haruo
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.