Granted Patent
Utility
US 6,597,808 · App. 09/454,633
User drawn circled region extraction from scanned documents
Inventors:
Jinhong Guo, Junichi Kanai
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Dec 6, 1999
Inventors
Jinhong Guo
Junichi Kanai
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.