(19)

(11)

EP 4 133 023 A1

(12)

(43) Date of publication: 15.02.2023 Bulletin 2023/07 (21) Application number: 20930284.3 (22) Date of filing: 08.04.2020

(51) International Patent Classification (IPC):  C09K 11/02(1974.07) C09K 3/10(1968.09) G02F 1/1335(1990.01) G02B 5/20(1968.09) C09K 11/88(1985.01) C08J 5/18(1974.07) G02F 1/1339(1990.01) (52) Cooperative Patent Classification (CPC): C08J 5/18; C09K 11/88; G02B 5/206; C08J 2300/00; G02F 1/133614; G02F 1/133617; G02F 2202/36; G02F 1/15; G02F 1/167 (86) International application number: PCT/US2020/027184 (87) International publication number: WO 2021/206703 (14.10.2021 Gazette 2021/41)

(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 (71) Applicant: E Ink California, LLC Fremont CA 94538 (US)	(72) Inventor: STEINHAGEN, Chet Fremont, California 94538 (US) (74) Representative: Cole, David John  46 Kirkhill Gardens West Greenlees Estate Cambuslang Glasgow G72 8EZ Cambuslang Glasgow G72 8EZ (GB)