Granted Patent
Utility
US 5,579,414 · App. 08/447,095
OCR image preprocessing method for image enhancement of scanned documents by reversing invert text
Inventors:
Bruce B. Fast, Dana R. Allen
Patented Case
View Patent ↗
Granted: Nov 26, 1996
Filed: May 22, 1995
Inventors
Bruce B. Fast
Dana R. Allen
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.