Insulating material, method for producing insulating...

Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board

Reexamination Certificate

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Details

C427S058000, C427S096100, C427S097100, C427S379000, C428S323000, C428S457000, C428S458000

Reexamination Certificate

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07611747

ABSTRACT:
This invention provides a material for a multi-layer circuit board, excellent in insulating property and burying properties and free from occurrence of cracks, a production method, and a multi-layer circuit board using the insulating material. The invention provides an insulating material having a curable composition layer wherein the curable composition layer contains 0 to 50 pieces/cm2of foreign matter having particle sizes falling within a range of 30 to 50 μm, a production method, and a production method for a multi-layer circuit board using the insulating material.

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