Granted Patent
Utility
US 5,490,170 · App. 08/159,122
Coding apparatus for digital signal
Inventors:
Kenzo Akagiri, Kyoya Tsutsui
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Nov 30, 1993
Inventors
Kenzo Akagiri
Kyoya Tsutsui
Assignee (at issue)
SONY GROUP 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.