Granted Patent
Utility
US 5,656,733 · App. 08/483,620
Lignin-containing resinous compositions
Inventor:
Richard Robert Suchanec
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Jun 7, 1995
Inventor
Richard Robert Suchanec
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.