Granted Patent
Utility
US 6,446,080 · App. 09/074,683
Method for creating, modifying, and playing a custom playlist, saved as a virtual CD, to be played by a digital audio/visual actuator device
Inventors:
John M. Van Ryzin, Peter Douma
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: May 8, 1998
Inventors
John M. Van Ryzin
Peter Douma
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.