Granted Patent
Utility
US 6,428,664 · App. 09/596,846
Biosensor
Inventors:
Raghbir S. Bhullar, Douglas P. Walling
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jun 19, 2000
Inventors
Raghbir S. Bhullar
Douglas P. Walling
Assignee (at issue)
Roche Diagnostics 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.