Granted Patent
Utility
US 5,980,690 · App. 09/138,413
Creping adhesives containing oxazoline polymers and methods of use thereof
Inventors:
Joseph F. Warchol, Cynthia D. Walton
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Aug 24, 1998
Inventors
Joseph F. Warchol
Cynthia D. Walton
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.