Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2004-10-18
2008-03-18
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C428S212000, C428S480000, C359S586000
Reexamination Certificate
active
07345137
ABSTRACT:
Modified copolyesters having relatively low refractive indices and relatively high glass transition temperatures are disclosed. These modified copolyesters can be used in forming one or more layers in an optical film, such as a multilayer polymer film.
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Chien Bert T.
Denker Martin E.
Derks Kristopher J.
Hebrink Timothy J.
Johnson Matthew B.
3M Innovative Properties Company
Truong Duc
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