Reader stop-layers

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United States of America Patent

PATENT NO 8771847
APP PUB NO 20130095349A1
SERIAL NO

13274139

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Tolerances for manufacturing reader structures for transducer heads continue to grow smaller and storage density in corresponding storage media increases. Reader stop layers may be utilized during manufacturing of reader structures to protect various layers of the reader structure from recession and/or scratches while processing other non-protected layers of the reader structure. For example, the stop layer may have a very low polish rate during mechanical or chemical-mechanical polishing. Surrounding areas may be significantly polished while a structure protected by a stop layer with a very low polish rate is substantially unaffected. The stop layer may then be removed via etching, for example, after the mechanical or chemical-mechanical polishing is completed.

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Patent Owner(s)

Patent OwnerAddress
SEAGATE TECHNOLOGY LLC47488 KATO ROAD FREMONT CA 94538

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boonstra, Thomas Roy Chaska, US 16 178
McKinlay, Shaun Eric Eden Prairie, US 19 123
Singleton, Eric Walter Maple Plain, US 38 358
Van, Dorn Carolyn Pitcher Crystal, US 5 25

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