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EP 4 204 137 A2

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(88) Date of publication A3: 28.04.2022 (43) Date of publication: 05.07.2023 Bulletin 2023/27 (21) Application number: 21783076.9 (22) Date of filing: 23.08.2021

(51) International Patent Classification (IPC):  B01J 13/00(2006.01) H01M 4/62(2006.01) C01B 32/00(2017.01) (52) Cooperative Patent Classification (CPC): B01J 13/0091; H01M 4/625; C04B 38/0045; C04B 38/009; C04B 2111/00853; C01B 32/05; C01P 2004/61; C01P 2006/11; C01P 2006/16; C01P 2006/12; C01P 2006/40; C01P 2006/90; Y02E 60/10; H01M 10/0525; H01M 4/386; H01M 4/134; H01M 4/1395   C-Sets: C04B 38/0045, C04B 35/52, C04B 38/0022, C04B 38/0074; C04B 38/009, C04B 35/52; (86) International application number: PCT/US2021/047168 (87) International publication number: WO 2022/046645 (03.03.2022 Gazette 2022/09)

(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: 25.08.2020 US 202063070230 P (71) Applicant: Aspen Aerogels Inc. Northborough, MA 01532 (US)

(72) Inventors: ZAFIROPOULOS, Nicholas Anthony Wayland, Massachusetts 01778 (US) TRIFU, Roxana Worcester, Massachusetts 01606 (US) BEGAG, Redouane Hudson, Massachusetts 01749 (US) MILLER, Harris R. Sharon, Massachusetts 02067 (US) RHINE, Wendell E. Belmont, Massachusetts 02478 (US) LEVENTIS, Nicholas Worcester, Massachusetts 01605 (US) GOULD, George L. Mendon, Massachusetts 01756 (US) ERCHAK, Alexei A. Easton, Massachusetts 02356 (US) (74) Representative: Forresters IP LLP  Skygarden Erika-Mann-Straße 11 80636 München 80636 München (DE)