Granted Patent
Utility
US 5,804,656 · App. 08/778,845
Compositions of the ABS type for processing by extrusion and deep drawing
Inventors:
Herbert Eichenauer, Peter Kruger, Harry Staratschek, Edgar Leitz, Dieter Wittman, Karl-Erwin Piejko, Jurgen Ramthun
Patented Case
View Patent ↗
Granted: Sep 8, 1998
Filed: Jan 6, 1997
Inventors
Herbert Eichenauer
Peter Kruger
Harry Staratschek
Edgar Leitz
Dieter Wittman
Karl-Erwin Piejko
Jurgen Ramthun
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.