Granted Patent
Utility
US 6,557,575 · App. 09/997,491
Fluid flow control freeze/thaw valve for narrow bore capillaries or microfluidic devices
Inventors:
Geoff C. Gerhardt, Edouard S. P. Bouvier, Theodore A. Dourdeville
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Nov 19, 2001
Inventors
Geoff C. Gerhardt
Edouard S. P. Bouvier
Theodore A. Dourdeville
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.