Granted Patent
Utility
US 6,169,844 · App. 09/003,027
Program recording methods and apparatus
Inventor:
Masayuki Arai
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Jan 5, 1998
Inventor
Masayuki Arai
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.