Granted Patent
Utility
US 5,449,558 · App. 08/209,074
Optical article having an antireflection layer
Inventors:
Takafumi Hasegawa, Ko Aosaki, Fumiko Nonaka, Norihide Sugiyama, Aya Yamaguti, Hiroyuki Watanabe, Masaru Nakamura
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Mar 11, 1994
Inventors
Takafumi Hasegawa
Ko Aosaki
Fumiko Nonaka
Norihide Sugiyama
Aya Yamaguti
Hiroyuki Watanabe
Masaru Nakamura
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.