Granted Patent
Utility
US 6,594,780 · App. 09/420,348
Operating system and data protection
Inventors:
Andrew Shen, Hanxiang Sun, Zhang Jian
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Oct 19, 1999
Inventors
Andrew Shen
Hanxiang Sun
Zhang Jian
Assignee (at issue)
Inasoft, 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.