Granted Patent
Utility
US 4,659,713 · App. 06/656,391
Quinoxalinedione compounds useful for controlling coccidiosis
Inventor:
D. Kendall Hass
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Oct 1, 1984
Inventor
D. Kendall Hass
Assignee (at issue)
International Minerals & Chemical Corp.
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.