Granted Patent
Utility
US 6,587,583 · App. 09/398,392
Compression/decompression algorithm for image documents having text, graphical and color content
Inventors:
Raymond C. Kurzweil, Kenneth M. MacKenzie, Mark S. Dionne
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Sep 17, 1999
Inventors
Raymond C. Kurzweil
Kenneth M. MacKenzie
Mark S. Dionne
Assignee (at issue)
Kurzweil Educational Systems, 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.