Granted Patent
Utility
US 6,280,502 · App. 09/223,886
Removing solids from a fluid
Inventors:
J. W. H. M. van Veen, Marco Betting
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Dec 31, 1998
Inventors
J. W. H. M. van Veen
Marco Betting
Assignee (at issue)
SHELL OIL COMPANY
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.