Granted Patent
Utility
US 6,326,427 · App. 09/381,840
Use of amphiphiles for permanent improvement of adhesive and/or coating compatibility of polyolefin based shaped bodies
Inventors:
Paul Birnbrich, Herbert Fischer, Joerg-Dieter Klamann, Martin Schaefer, Rolf Tenhaef
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Dec 2, 1999
Inventors
Paul Birnbrich
Herbert Fischer
Joerg-Dieter Klamann
Martin Schaefer
Rolf Tenhaef
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.