Granted Patent
Utility
US 5,114,930 · App. 07/522,709
Avermectin derivatives with a spacer inserted between the disaccharide and the aglycone useful as antiparasitic agents
Inventors:
Timothy A. Blizzard, Gaye Margiatto
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: May 14, 1990
Inventors
Timothy A. Blizzard
Gaye Margiatto
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.