Granted Patent
Utility
US 5,846,663 · App. 08/601,113
Method of surface sizing paper comprising surface sizing paper with 2-oxetanone ketene multimer sizing agent
Inventors:
Clement L. Brungardt, Richard J. Riehle, Jian Zhang
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Feb 16, 1996
Inventors
Clement L. Brungardt
Richard J. Riehle
Jian Zhang
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.