(19)

(11)

EP 2 499 643 A2

(12)

(88) Date of publication A3: 10.11.2011 (43) Date of publication: 19.09.2012 Bulletin 2012/38 (21) Application number: 10844846.5 (22) Date of filing: 05.11.2010

(51) International Patent Classification (IPC):  G21C 7/08(2006.01) (86) International application number: PCT/US2010/002904 (87) International publication number: WO 2011/093840 (04.08.2011 Gazette 2011/31)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 25.01.2010 US 657734 25.01.2010 US 657736 06.11.2009 US 590447 (71) Applicant: Searete LLC Bellevue, WA 98004 (US)

(72) Inventors: AHLFELD, Charles E. LaJolla California 92037 (US) GREENSPAN, Ehud Emeryville California 94608 (US) HYDE, Roderick A. Redmond Washington 98052 (US) MYHRVOLD, Nathan P. Bellevue Washington 98004 (US) WALTER, Joshua C. Kirkland Washington 98033 (US) WEAVER, Kevan D. Redmond Washington 98053 (US) WEAVER, Thomas A. San Mateo California 94402 (US) WOOD, Lowell L. Jr. Bellevue WA 98004 (US) ZIMMERMAN, George B. Lafayette California 94549 (US) (74) Representative: Harris, Ian Richard  D Young & Co LLP 120 Holborn London EC1N 2DY London EC1N 2DY (GB)