Granted Patent
Utility
US 5,068,421 · App. 07/585,541
Chemical process
Inventor:
Liou-Liang Horng
Patented Case
View Patent ↗
Granted: Nov 26, 1991
Filed: Sep 20, 1990
Inventor
Liou-Liang Horng
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.