Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Reexamination Certificate
2006-11-14
2006-11-14
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
C264S176100, C264S219000, C359S642000, C528S480000
Reexamination Certificate
active
07135545
ABSTRACT:
Methods are disclosed which utilize polycarbonate to form solid optical lenses. The polycarbonates may be selected from high molecular weight linear or branched species. Viscosity and melt flow are specified for improved mechanical properties. The method provides lenses with greater resistance to cracking and crazing, for example, in instances where flaws are subject to strain and require containment.
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Chiu Hao Wen
Yang Hsinjin Edwin
Essilor International (Compagnie General D'Optique)
Keusey, Tutunjian & & Bitetto, P.C.
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