Granted Patent
Utility
US 6,635,180 · App. 09/764,957
Process and apparatus for the purification and/or treatment of suspensions
Inventors:
Hans Olapinski, Hans-Peter Feuerpeil, Dieter Bläse
Patented Case
View Patent ↗
Granted: Oct 21, 2003
Filed: Jan 18, 2001
Inventors
Hans Olapinski
Hans-Peter Feuerpeil
Dieter Bläse
Assignee (at issue)
Membraflow GmbH & Co. KG Filtersysteme
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.