Granted Patent
Utility
US 5,489,642 · App. 08/333,104
Repulpable contact adhesive
Inventors:
Peter Gleichenhagen, Andreas Westphal
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Nov 1, 1994
Inventors
Peter Gleichenhagen
Andreas Westphal
Assignee (at issue)
BEIERSDORF AG
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.