Granted Patent
Utility
US 4,845,199 · App. 07/071,685
Process for heat treating chemically unmodified gamma-globulin
Inventors:
Yutaka Hirao, Katuhiro Uriyu, Kazuo Takechi, Yahiro Uemura
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Jul 9, 1987
Inventors
Yutaka Hirao
Katuhiro Uriyu
Kazuo Takechi
Yahiro Uemura
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.