Granted Patent
Utility
US 6,090,051 · App. 09/261,641
Method and apparatus for eye tracking and monitoring pupil dilation to evaluate cognitive activity
Inventor:
Sandra Marshall
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Mar 3, 1999
Inventor
Sandra Marshall
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.