Granted Patent
Utility
US 6,800,596 · App. 10/434,594
Lubricating oil dispersant
Inventor:
John T. Loper
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: May 9, 2003
Inventor
John T. Loper
Assignee (at issue)
Afton Chemical Intangibles LLC
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.