Granted Patent
Utility
US 6,325,922 · App. 09/568,246
Filter device for cleaning plastics melts
Inventors:
Rainer Schaller, Eduard Lindner, Ralf Henke, Detlef Gneuss
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: May 9, 2000
Inventors
Rainer Schaller
Eduard Lindner
Ralf Henke
Detlef Gneuss
Assignee (at issue)
Arteva Technologies, S.A.R.L.
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.