Scores of clean tech company CEOs pitched their leading-edge ideas to seed capital angels and venture capitalists at this year's Clean Tech Open 2012 Global Forum, in San Jose, California. Held at the Hayes Mansion on November 8 and 9, the meeting is the culmination of numerous regional competitions by the organization, which has helped over 600 companies raise over $660 million in financing since 2006. After a 10-minute business plan pitch heard by over a thousand attendees, company finalists were quizzed by a panel of judges to compete for hundreds of thousands, if not millions of dollars in start up capital.