Granted Patent
Utility
US 6,169,047 · App. 09/268,319
Alkali-free glass and flat panel display
Inventors:
Manabu Nishizawa, Yasumasa Nakao
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Mar 16, 1999
Inventors
Manabu Nishizawa
Yasumasa Nakao
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.