Granted Patent
Utility
US 4,677,194 · App. 06/764,253
Isolation of an endotoxin inactivator from human plasma
Inventor:
Yu Hao
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Aug 9, 1985
Inventor
Yu Hao
Assignee (at issue)
Biotech Research Laboratories
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.