Granted Patent
Utility
US 6,614,944 · App. 09/499,364
Image enhancement filter with adaptive threshold
Inventor:
Vladimir Levantovsky
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Feb 10, 2000
Inventor
Vladimir Levantovsky
Assignee (at issue)
Oak Technology, 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.