Granted Patent
Utility
US 6,428,669 · App. 09/739,702
Method for separating the constituents of a dispersion
Inventors:
Norbert Klippel, Ole-Morten Midtgard
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Dec 20, 2000
Inventors
Norbert Klippel
Ole-Morten Midtgard
Assignee (at issue)
ABB RESEARCH LTD.
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.