Granted Patent
Utility
US 6,022,947 · App. 09/156,337
Light-colored, low molecular weight phenolic-modified rosin esters
Inventors:
Charles R. Frihart, Kenneth E. Krajca, Brett Neumann
Patented Case
View Patent ↗
Granted: Feb 8, 2000
Filed: Sep 18, 1998
Inventors
Charles R. Frihart
Kenneth E. Krajca
Brett Neumann
Assignee (at issue)
Union Camp Corporation
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.