Granted Patent
Utility
US 5,109,117 · App. 07/543,906
Method of somatotropin naturation using urea and a soluble organic alcohol
Inventor:
Sa V. Ho
Patented Case
View Patent ↗
Granted: Apr 28, 1992
Filed: Jun 26, 1990
Inventor
Sa V. Ho
Assignee (at issue)
Monsanto Company
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.