Granted Patent
Utility
US 4,966,813 · App. 07/216,955
Reflection-preventive pellicle film
Inventors:
Tokinori Agou, Hitomi Matsuzaki, Masahide Tanaka, Takamasa Tsumoto, Masaaki Kawasaki, Takami Nishikawa, Shuji Minami
Patented Case
View Patent ↗
Granted: Oct 30, 1990
Filed: Jul 11, 1988
Inventors
Tokinori Agou
Hitomi Matsuzaki
Masahide Tanaka
Takamasa Tsumoto
Masaaki Kawasaki
Takami Nishikawa
Shuji Minami
Assignee (at issue)
Mitsui Petrochemical Industries, 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.