Granted Patent
Utility
US 6,731,447 · App. 09/871,877
Secure data file erasure
Inventors:
Keith G. Bunker, Edward P. deJong
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Jun 4, 2001
Inventors
Keith G. Bunker
Edward P. deJong
Assignee (at issue)
Xerox Corporation
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.