Granted Patent
Utility
US 5,639,664 · App. 08/376,296
Method for producing human nerve growth factor 2
Inventors:
Makoto Iwane, Yoshihiko Kaisho, Koichi Igarashi
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Jan 23, 1995
Inventors
Makoto Iwane
Yoshihiko Kaisho
Koichi Igarashi
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.