Granted Patent
Utility
US 6,661,472 · App. 09/406,541
Channel selection in digital television
Inventors:
Peter Shintani, Shigeharu Kondo
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Sep 27, 1999
Inventors
Peter Shintani
Shigeharu Kondo
Assignees (at issue)
SONY GROUP CORPORATION
SONY ELECTRONICS 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.