Granted Patent
Utility
US 5,691,044 · App. 08/571,299
Light absorptive antireflector
Inventors:
Takuji Oyama, Yoshihito Katayama
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Dec 12, 1995
Inventors
Takuji Oyama
Yoshihito Katayama
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.