High modulus polyimide compositions useful as dielectric...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate

Reexamination Certificate

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C528S125000, C528S126000, C528S128000, C528S172000, C528S173000, C528S179000, C528S183000, C528S185000, C528S220000, C528S229000, C528S350000, C528S353000, C428S411100, C428S423100, C428S457000, C428S458000, C428S473500, C428S901000, C427S457000, C427S458000, C427S487000, C427S488000, C427S491000, C427S497000, C427S535000, C264S212000, C264S272110, C264S272170, C264S299000, C264S297100, C264S297400, C264S309000, C156S233000, C156S243000, C156S325000, C156S326000, C156S330900, C156S331100, C156S331300, C156S

Reexamination Certificate

active

06956098

ABSTRACT:
The substrates of the present invention comprise a polyimide base polymer derived at least in part from collinear monomers together with crankshaft monomers. The resulting polyimide material has been found to provide advantageous properties, particularly for electronics type applications.

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