Granted Patent
Utility
US 5,384,054 · App. 08/181,828
Process for metal salts of hydrocarbyl dithiophosphoric acid
Inventor:
Abbas Kadkhodayan
Patented Case
View Patent ↗
Granted: Jan 24, 1995
Filed: Jan 18, 1994
Inventor
Abbas Kadkhodayan
Assignee (at issue)
Ethyl Petroleum Additives, 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.