IP Library Granted Patent US 5,449,558
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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,449,558
App. No.
08/209,074
Filed
1994-03-11
Granted
1995-09-12
Kind
A