Wenderoth, Lind & Ponack
Lens materials of high refractive indexes
 Compositions each comprising a copolymer of a specific allylic or (meth)acrylic compound of an iodine-substituted benzoic acid derivative and a comonomer have a refractive index n.sub.D.sup.20 of at least 1.58 and an Abbe's number of at least 28 and are excellent starting materials for the production of high quality lenses. 
Kureha Kagaku Kogyo Kabushiki Kaisha
G G C
G02B G02B C08F
inventional inventional inventional
Yasufumi Teruo Naohiro
Fujii Sakagami Murayama