Granted Patent
Utility
US 4,906,751 · App. 07/268,143
Mercaptotriazine derivatives as lubricant additives
Inventor:
Rainer Schneider
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Nov 7, 1988
Inventor
Rainer Schneider
Assignee (at issue)
Ciba-Geigy
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.