Granted Patent
Utility
US 4,278,554 · App. 06/141,305
Antioxidant
Inventor:
Robert E. Malec
Patented Case
View Patent ↗
Granted: Jul 14, 1981
Filed: Apr 18, 1980
Inventor
Robert E. Malec
Assignee (at issue)
Ethyl Corporation
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.