Granted Patent
Utility
US 6,066,264 · App. 09/365,292
Method of oil-water separation
Inventors:
John J. Ronan, Kenneth A. Perrotta, Paul E. Rebe
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Jul 30, 1999
Inventors
John J. Ronan
Kenneth A. Perrotta
Paul E. Rebe
Assignee (at issue)
Whatman GmbH
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.