Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2008-03-04
2008-03-04
Woodward, Ana (Department: 1796)
Stock material or miscellaneous articles
Composite
Of metal
C524S538000, C525S432000, C528S353000
Reexamination Certificate
active
07338715
ABSTRACT:
The polyimides of the present invention are derived from aliphatic diamines and show advantageous arc tracking performance (i.e., low arc tracking). These polyimides can be cured at low temperatures making them suitable as coverlay compositions in electronic circuitry. In addition, these polyimides are soluble and excellent in heat resistance and adhesion properties, showing a low dielectric constant even at 10 GHz or more.
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E.I. Du Pont de Nemours and Company
Woodward Ana
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