Optic devices formed from melt processable thermoplastic materials having a high refractive index
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United States of America Patent
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Dec 28, 1999
Grant Date -
N/A
app pub date -
Aug 15, 1997
filing date -
Aug 15, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates generally to optic devices such as ophthalmic lenses, lens blanks, and lens preforms, made from a thermoplastic material of a specific formula and a process for forming the same.
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