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EP 4 051 807 A1

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(43) Date of publication: 07.09.2022 Bulletin 2022/36 (21) Application number: 20880921.0 (22) Date of filing: 30.10.2020

(51) International Patent Classification (IPC):  C12Q 1/68(2018.01) G01N 33/571(2006.01) G01N 33/53(2006.01) (52) Cooperative Patent Classification (CPC): C12Q 2600/158; C12Q 1/6886; C12Q 2600/112; C12Q 2600/118 (86) International application number: PCT/US2020/058398 (87) International publication number: WO 2021/087388 (06.05.2021 Gazette 2021/18)

(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: 31.10.2019 US 201962928996 P (71) Applicants: Showa Denko Materials (America), Inc. San Jose, California 95131 (US) Showa Denko Materials Co., Ltd. Tokyo 100-6606 (JP) National University Corporation Hokkaido University Hokkaido 060-0808 (JP)

(72) Inventors: MURAKAMI, Taku San Jose, California 95131 (US) OSAWA, Takahiro Sapporo, Hokkaido 060-0808 (JP) (74) Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB  Siebertstraße 3 81675 München 81675 München (DE)