(19)

(11)

EP 3 815 127 A2

(12)

(88) Date of publication A3: 02.07.2020 (43) Date of publication: 05.05.2021 Bulletin 2021/18 (21) Application number: 19816034.3 (22) Date of filing: 12.07.2019

(51) International Patent Classification (IPC):  H01J 49/00(2006.01) H01J 49/06(2006.01) H01J 49/04(2006.01) H01J 49/26(2006.01) (86) International application number: PCT/IB2019/055944 (87) International publication number: WO 2019/234724 (12.12.2019 Gazette 2019/50)

(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: KH MA MD TN (30) Priority: 05.06.2018 US 201862680592 P 12.07.2018 US 201816530396 (71) Applicant: Trace Matters Scientific LLC Somverville, Massachusetts 02143 (US)	(72) Inventor: TAGHIOSKOUI, Mazdak Somerville Avenue Somverville, Massachusetts 02143 (US) (74) Representative: Patentgruppen A/S  Aaboulevarden 31, 4th Floor 8000 Aarhus C 8000 Aarhus C (DK)