Granted Patent
Utility
US 6,475,599 · App. 09/711,931
Substrate for information recording media
Inventors:
Yasuhiro Saito, Kazuishi Mitani, Yoshihiro Matsuno, Tatsuro Umeyama, Kazuaki Kanai
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Nov 15, 2000
Inventors
Yasuhiro Saito
Kazuishi Mitani
Yoshihiro Matsuno
Tatsuro Umeyama
Kazuaki Kanai
Assignee (at issue)
NIPPON SHEET GLASS COMPANY, LIMITED
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.