Granted Patent
Utility
US 5,667,686 · App. 08/547,250
Hydrocyclone for liquid - liquid separation and method
Inventor:
Mark F. Schubert
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Oct 24, 1995
Inventor
Mark F. Schubert
Assignee (at issue)
United States Filter Corporation
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.