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(11)

EP 3 548 912 A1

(12)

(43) Date of publication: 09.10.2019 Bulletin 2019/41 (21) Application number: 17781239.3 (22) Date of filing: 20.09.2017

(51) International Patent Classification (IPC):  G01R 35/00(2006.01) G01R 33/00(2006.01) G01R 33/02(2006.01) G01D 5/20(2006.01) (86) International application number: PCT/US2017/052523 (87) International publication number: WO 2018/102009 (07.06.2018 Gazette 2018/23)

(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 Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 29.11.2016 US 201615364192 (71) Applicant: Google LLC Mountain View, CA 94043 (US)	(72) Inventors: JAIN, Advait Mountain View California 94043 (US) STEIN, Murphy Mountain View California 94043 (US) CHUNG, Sherk Mountain View California 94043 (US) PATKAR, Saket Mountain View California 94043 (US) (74) Representative: Maikowski & Ninnemann Patentanwälte Partnerschaft mbB  Postfach 15 09 20 10671 Berlin 10671 Berlin (DE)