Granted Patent
Utility
US 5,504,152 · App. 08/370,733
Esterification of rosin
Inventors:
Robert W. Schluenz, Paul S. Douglas
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: Jan 10, 1995
Inventors
Robert W. Schluenz
Paul S. Douglas
Assignee (at issue)
Arizona Chemical Company, 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.