Granted Patent
Utility
US 5,691,046 · App. 08/642,397
Recording medium
Inventors:
Toshiya Matsubara, Nobuyuki Yokota
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: May 3, 1996
Inventors
Toshiya Matsubara
Nobuyuki Yokota
Assignee (at issue)
ASAHI GLASS CO., LTD.
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.