Granted Patent
Utility
US 6,681,616 · App. 10/008,604
Microfluidic viscometer
Inventors:
Michael A. Spaid, Andrea W. Chow, Benjamin Wang, Ring-Ling Chien, J. Wallace Parce, Anne R. Kopf-Sill
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Nov 9, 2001
Inventors
Michael A. Spaid
Andrea W. Chow
Benjamin Wang
Ring-Ling Chien
J. Wallace Parce
Anne R. Kopf-Sill
Assignee (at issue)
Caliper Technologies, Corp.
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.