Granted Patent
Utility
US 5,846,626 · App. 08/604,569
Optical recording medium and method of producing same
Inventors:
Toshiyuki Kashiwagi, Motohiro Furuki, Shoji Fukuchi, Yoshitake Yanagisawa
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Feb 21, 1996
Inventors
Toshiyuki Kashiwagi
Motohiro Furuki
Shoji Fukuchi
Yoshitake Yanagisawa
Assignee (at issue)
Sony Corporation and Sony Disc Technology 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.