Granted Patent
Utility
US 6,671,672 · App. 09/281,356
Voice authentication system having cognitive recall mechanism for password verification
Inventor:
Larry Paul Heck
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Mar 30, 1999
Inventor
Larry Paul Heck
Assignee (at issue)
Nuance Communications, 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.