Granted Patent
Utility
US 4,740,498 · App. 06/790,668
Fibronectin preparations
Inventors:
Yutaka Hirao, Takao Ohmura, Kazuo Takechi, Tsunetaka Nakajima, Masayuki Nishida
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Oct 23, 1985
Inventors
Yutaka Hirao
Takao Ohmura
Kazuo Takechi
Tsunetaka Nakajima
Masayuki Nishida
Assignee (at issue)
Green Cross Corporation
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.