Granted Patent
Utility
US 6,080,833 · App. 08/896,008
Low-birefringent organic optical component and a spirobiindan polymer
Inventors:
Atsuo Otsuji, Keisuke Takuma, Rihoko Suzuki, Tatsuhiro Urakami, Toshihiro Motoshima, Wataru Yamashita, Tomomi Yoshimura, Atsushi Shibuya, Yoshihiro Sakata, Hideaki Oikawa, Masahiro Ohta, Masanobu Ajioka, Masatoshi Takagi, Akio Karasawa
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Jul 17, 1997
Inventors
Atsuo Otsuji
Keisuke Takuma
Rihoko Suzuki
Tatsuhiro Urakami
Toshihiro Motoshima
Wataru Yamashita
Tomomi Yoshimura
Atsushi Shibuya
Yoshihiro Sakata
Hideaki Oikawa
Masahiro Ohta
Masanobu Ajioka
Masatoshi Takagi
Akio Karasawa
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.