Granted Patent
Utility
US 5,642,433 · App. 08/509,185
Method and apparatus for image contrast quality evaluation
Inventors:
Shih-Jong J. Lee, Paul S. Wilhelm
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Jul 31, 1995
Inventors
Shih-Jong J. Lee
Paul S. Wilhelm
Assignee (at issue)
Neopath, 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.