Granted Patent
Utility
US 6,133,323 · App. 09/050,560
Process for enhancing immune response in animals using .beta.-carotene as a dietary supplement
Inventor:
Michael Griffin Hayek
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Mar 30, 1998
Inventor
Michael Griffin Hayek
Assignee (at issue)
The Iams 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.