Granted Patent
Utility
US 5,883,879 · App. 08/858,501
High density optical disc configuration
Inventors:
Satoru Fukuoka, Yukihiro Sugawara
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: May 19, 1997
Inventors
Satoru Fukuoka
Yukihiro Sugawara
Assignees (at issue)
Pioneer Video Corporation
Pioneer Electronic 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.