Granted Patent
Utility
US 6,794,477 · App. 10/217,372
Silane-modified polyvinyl acetals
Inventors:
Kurt Stark, Bernhard Glaser, Christian Hoegl, Karl-Heinz Eichel
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Aug 13, 2002
Inventors
Kurt Stark
Bernhard Glaser
Christian Hoegl
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.