Granted Patent
Utility
US 6,468,422 · App. 09/874,763
Water-wettable chromatographic media for solid phase extraction
Inventors:
Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick McDonald
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Jun 5, 2001
Inventors
Edouard S. P. Bouvier
Randy E. Meirowitz
Patrick McDonald
Assignee (at issue)
Waters Investments Limited
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.