Granted Patent
Utility
US 5,674,940 · App. 08/660,467
ABS molding compounds with improved toughness
Inventors:
Herbert Eichenauer, Ulrich Jansen, Karl-Erwin Piejko
Patented Case
View Patent ↗
Granted: Oct 7, 1997
Filed: Jun 7, 1996
Inventors
Herbert Eichenauer
Ulrich Jansen
Karl-Erwin Piejko
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.