In 2009, General Motors Co. more than doubled its number of technology patents in alternative-powered vehicles. This is impressive, considering that GM certainly had been busy with the bankruptcy and reorganization proceedings.
According to Derwent World Patents Index, of London, an international database of patent activity, GM filed 629 patent applications in the alternative-power area last year. The year before, only 261 were filed. GM’s patent is the second-highest volume in the industry, second only to Toyota Motor Corp. Still leading in the alternative-power field is Toyota with 2,058 new patent applications last year, down from 2,379 in 2008.
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