Granted Patent
Utility
US 6,512,090 · App. 09/713,401
Asphalt emulsion containing solidified pyrolytic wood tar oil
Inventors:
Richard Robert Suchanec, Norman Leroy Kennedy
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Nov 15, 2000
Inventors
Richard Robert Suchanec
Norman Leroy Kennedy
Assignee (at issue)
HERCULES 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.