Intel Corp. Makes Marketing Push for Centrino Chip  SAN FRANCISCO (Reuters) - Intel Corp. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=INTC.O qtype=sym infotype=info qcat=news"&gt;INTC.O&lt;/A&gt; on Monday  launched a global advertising campaign for its Centrino  notebook computer chips, aiming to boost sales of a brand that  has brought the world's largest chip maker more than \$3 billion  in revenue since its start last year.