POLISHING PAD COMPRISING TRANSMISSIVE REGION
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United States of America Patent
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Issued Date -
Sep 12, 2013
app pub date -
Nov 18, 2011
filing date -
Nov 18, 2010
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Abandoned
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Abstract
The invention provides a polishing pad comprising an optically transmissive region, wherein the polishing pad comprises a polishing pad body comprising an opaque first region and an optically transmissive second region, wherein the second region has at least one recess formed therein of at least one part of the polishrag pad body, and at least one translucent window insert is integrated into the at least one recessed area. The polishing pad body and the at least one translucent window insert comprise different porous. materials.
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