Granted Patent
Utility
US 6,103,119 · App. 09/228,663
Filter cartridges having track etched membranes and methods of making same
Inventors:
James George Clements, William Stephen Macomber, Suzanne Surprenant
Patented Case
View Patent ↗
Granted: Aug 15, 2000
Filed: Jan 12, 1999
Inventors
James George Clements
William Stephen Macomber
Suzanne Surprenant
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.