Granted Patent
Utility
US 5,436,355 · App. 08/191,824
Process for making avermectin/zein compositions
Inventor:
Richard J. Demchak
Patented Case
View Patent ↗
Granted: Jul 25, 1995
Filed: Feb 3, 1994
Inventor
Richard J. Demchak
Assignee (at issue)
MERCK & CO., INC.
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.