Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Reexamination Certificate
2006-11-28
2006-11-28
Chen, Vivian (Department: 1773)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
C428S421000, C428S480000, C428S483000, C428S522000, C428S910000, C359S352000, C359S359000, C359S485050, C359S487030, C359S494010, C359S580000, C359S584000, C359S586000, C359S589000, C359S838000, C359S839000, C525S191000, C525S199000, C525S222000
Reexamination Certificate
active
07141297
ABSTRACT:
Optical bodies, comprising: a plurality of first optical layers comprising a first polymer composition that comprises (i) a polyester portion having terephthalate comonomer units and ethylene glycol comonomer units; and(ii) a second portion corresponding to a polymer having a glass transition temperature of at least about 130° C.; and a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers. Also disclosed are optical bodies comprising: (a) a plurality of first optical layers, each first optical layer being oriented; and (b) a plurality of second optical layers, disposed in a repeating sequence with the plurality of first optical layers, comprising a blend of polymethylmethacrylate and polyvinylidene fluoride. Methods of making the above-described optical bodies, and articles employing such optical bodies are also provided.
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Andrus, Jr. Milton H.
Condo Peter D.
Hebrink Timothy J.
Liu Yaoqi J.
Ouderkirk Andrew J.
3M Innovative Properties Company
Chen Vivian
Wetzels Anna A.
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