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20 most profitable tech companies

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20. Lam Research

• See more Fortune 500 data for Lam Resarch

Fortune 500 rank: 759

The chip manufacturing equipment maker saw earnings grow 104% to $686 million as demand rose for flash memory chips used in the iPhone and other consumer gadgets.

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Last updated April 24 2008: 11:04 AM ET

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20 most profitable tech companies

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