Kleiner's secretive battery-ultracapacitor company, EEStor

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Kleiner Perkins, the well-known Silicon Valley venture capital firm, is backing an obsessively secret company called EEStor, which says it has developed a battery-ultracapacitor technology that “blows away” current lithium-ion technology in all aspects of performance.

See the story here by Toronto Star’s Tyler Hamilton.

The company doesn’t even want its response published, but Toronto Star publishes it anyway:


“EEStor is not making public statements at present time,” company co-founder and chief executive Richard Weir replied when the Toronto Star requested an interview via email. “EEStor would also like to have you and your paper not publish any articles about our company and the Toronto Star is certainly not authorized to publish this response.”

This isn’t entirely new. We mentioned EEStor before, pointing to a piece that said Kleiner had led a $3M investment into the company. But Toronto Star has more details.

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About the Author,

Matt launched VentureBeat in September of 2006, with the realization that no one else was covering the entrepreneurial and tech innovation scene with the velocity or depth that he was. Prior to founding VentureBeat, he covered venture capital for the San Jose Mercury News from 2001 to 2006. In 2002, Matt was awarded "Journalist of the Year" by the Northern California Society of Professional Journalists. Prior to working at the Merc, he was a correspondent for the Wall Street Journal in Bonn, Germany from 1995 to 1998, and a writer for the Washington Post in 1994. Matt holds a PhD in Government and an MA in German and European Studies from Georgetown University. In addition to VentureBeat, Matt is also the Executive Producer of DEMO, the leading launchpad event for emerging technologies.

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