Granted Patent
Utility
US 6,200,533 · App. 09/217,726
Solid phase extraction plate with silica disks
Inventors:
Dennis D. Blevins, Stephen K. Schultheis, David Hall
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Dec 21, 1998
Inventors
Dennis D. Blevins
Stephen K. Schultheis
David Hall
Assignee (at issue)
Ansys Diagnostics, Inc.
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.