Granted Patent
Utility
US 6,595,427 · App. 09/652,427
Method and apparatus for encoding and decoding information in a non-visible manner
Inventors:
Vivek Soni, J. Barry Mahoney, William T. Plummer, Richard G. Egan
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Aug 31, 2000
Inventors
Vivek Soni
J. Barry Mahoney
William T. Plummer
Richard G. Egan
Assignee (at issue)
Polaroid Corporation
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.