Granted Patent
Utility
US 5,605,963 · App. 08/383,832
ABS polymer compositions having a uniform matt surface
Inventors:
Edgar Leitz, Herbert Eichenauer, Karl-Erwin Piejko, Dieter Wittmann, Ekkehard Frohberg
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: Feb 6, 1995
Inventors
Edgar Leitz
Herbert Eichenauer
Karl-Erwin Piejko
Dieter Wittmann
Ekkehard Frohberg
Assignee (at issue)
Bayer Aktiengesellschaft
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.