Granted Patent
Utility
US 5,229,415 · App. 07/857,035
Alkylthio alkyl avermectins are active antiparasitic agents
Inventors:
Bruce O. Linn, Helmut Mrozik
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Mar 24, 1992
Inventors
Bruce O. Linn
Helmut Mrozik
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.