Meredith Perry
40u40 meredith perry
Age: 23

Founder, uBeam

This UPenn grad and onetime NASA intern may be only 23, but Perry's small startup, uBeam, which wirelessly transmits power, so impressed Yahoo CEO Marissa Mayer (herself No. 3 on the list) that she invested in the company 12 minutes after meeting Perry. Andreessen Horowitz, Founders Fund, and Zappos's CEO Tony Hsieh are also investors. With $750,000 in funding, Perry has said she's building out the technology as a consumer product (exactly what is yet to be determined). Gadget fans can hope to see it on shelves in Spring 2013.

--Colleen Leahey


- Last updated October 11 2012 03:32 PM ET
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Fortune's 40 Under 40

Who are 2012's young business stars? We've got the CEO of a blue-chip beer brand, an airline CEO who just placed the largest order in commercial aviation history, and Warren Buffett's new prodigy, among the Silicon Valley hotshots and others.

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