Structure having holes and method for producing the same

Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture

Reexamination Certificate

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Details

C428S131000, C428S137000, C428S450000, C428S699000, C428S701000, C205S324000, C977S726000

Reexamination Certificate

active

06972146

ABSTRACT:
A structure having a hole, including a substrate, a first layer including an alumina hole, and a second layer disposed between the substrate and the fist layer, wherein the second layer contains silicon, and has a smaller hole than the alumina hole.

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