U.S. companies made up more than half of the World Economic Forum's list of Technology Pioneers 2007, the group announced on Tuesday.

The final selection of 47 Technology Pioneers 2007 from 225 nominees was made by a panel of technology experts appointed by the World Economic Forum. Firms were nominated by leading venture capital and technology companies, the WEF said.

Of 27 U.S. firms selected, 13 are from California. The forum chose six U.K. companies and two each from the Netherlands, India, Israel, and Singapore. One company was selected from each of the following countries: Canada, Denmark, Finland, Ireland, Sweden, and Switzerland.

To be selected as a Technology Pioneer, a company must be involved in the development of life-changing technology innovation and have potential for long-term impact on business and society, the forum stated.

The nominees included medical, defense, communications, manufacturing, energy and entertainment technology companies. A full list of the selected firms can be found at the forum's website.

More on the web:

www.weforum.org/techpioneers