Granted Patent
Utility
US 5,911,817 · App. 09/173,367
Process for paving with asphalt containing mineral lubricating oil base stock
Inventor:
Roger E. Hayner
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Oct 15, 1998
Inventor
Roger E. Hayner
Assignee (at issue)
Marathon Ashland Petroleum 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.