Granted Patent
Utility
US 6,214,932 · App. 09/224,113
Creping adhesives obtained by the reaction of polyamide and polyvinylalcohol with epichlorohydrin
Inventor:
William W. Maslanka
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Dec 29, 1998
Inventor
William W. Maslanka
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.