Granted Patent
Utility
US 6,756,442 · App. 10/217,558
Silane-modified polyvinyl acetals
Inventors:
Kurt Stark, Thomas Kornek, Bernhard Glaser, Karl-Heinz Eichel
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Aug 13, 2002
Inventors
Kurt Stark
Thomas Kornek
Bernhard Glaser
Karl-Heinz Eichel
Assignee (at issue)
WACKER POLYMER SYSTEMS GMBH & CO. KG
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.