Granted Patent
Utility
US 6,420,980 · App. 09/806,928
Lossless compression encoding method and device, and lossless compression decoding method and device
Inventor:
Naoki Ejima
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Apr 6, 2001
Inventor
Naoki Ejima
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.