Sony and Samsung to Cross-License Patents  TOKYO (Reuters) - Sony Corp. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=6758.T qtype=sym infotype=info qcat=news"&gt;6758.T&lt;/A&gt; and Samsung  Electronics &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=005930.KS qtype=sym infotype=info qcat=news"&gt;005930.KS&lt;/A&gt; said on Tuesday they had agreed to  share patents on basic technology to speed up product  development and avoid adding to a growing number of  cross-border patent disputes.