Granted Patent
Utility
US 5,602,209 · App. 08/457,590
Creping adhesive containing oxazoline polymers
Inventors:
Joseph E. Warchol, Cynthia D. Walton-Bongers
Patented Case
View Patent ↗
Granted: Feb 11, 1997
Filed: Jun 1, 1995
Inventors
Joseph E. Warchol
Cynthia D. Walton-Bongers
Assignee (at issue)
Houghton International, Inc.
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.