Granted Patent
Utility
US 6,180,237 · App. 09/096,179
Tempered glass
Inventors:
Yasumasa Kato, Jun Nagata, Shigeyuki Seto, Satoshi Yoshida
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Jun 12, 1998
Inventors
Yasumasa Kato
Jun Nagata
Shigeyuki Seto
Satoshi Yoshida
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.