(19)

(11)

EP 4 232 812 A1

(12)

(43) Date of publication: 30.08.2023 Bulletin 2023/35 (21) Application number: 21883723.5 (22) Date of filing: 19.10.2021

(51) International Patent Classification (IPC):  G01N 33/00(2006.01) G01N 15/02(2006.01) G01N 15/06(2006.01) (52) Cooperative Patent Classification (CPC): G01N 33/0032; H04R 2201/023; H04Q 9/00; H04Q 2209/40; G08B 21/14; G08B 21/182; G08B 25/016; G01N 2001/2276; G01N 2015/0046; G01N 2015/0238 (86) International application number: PCT/US2021/055659 (87) International publication number: WO 2022/086999 (28.04.2022 Gazette 2022/17)

(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: 20.10.2020 US 202016949220 (71) Applicant: Applied Particle Technology, Inc. St. Louis MO 63108 (US)	(72) Inventors: CHADHA, Tandeep Singh St. Louis, Missouri 63108 (US) FANG, Jiaxi St. Louis, Missouri 63108 (US) BISWAS, Pratim St. Louis, Missouri 63108 (US) (74) Representative: Haseltine Lake Kempner LLP  One Portwall Square Portwall Lane Bristol BS1 6BH Bristol BS1 6BH (GB)