(19)
(11) EP 4 511 548 A1

(12)

(43) Date of publication:
26.02.2025 Bulletin 2025/09

(21) Application number: 23722783.0

(22) Date of filing: 19.04.2023
(51) International Patent Classification (IPC): 
E04B 1/68(2006.01)
(52) Cooperative Patent Classification (CPC):
E04B 2001/6818; E04B 1/6816
(86) International application number:
PCT/US2023/019023
(87) International publication number:
WO 2023/205195 (26.10.2023 Gazette 2023/43)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 20.04.2022 US 202263332807 P
14.04.2023 WO PCT/US2023/018600
17.04.2023 US 202318135545
18.04.2023 US 202363460091 P

(71) Applicants:
  • DuPont Safety & Construction, Inc.
    Wilmington, DE 19805 (US)
  • DDP Specialty Electronic Materials US, LLC
    Wilmington, DE 19805 (US)

(72) Inventors:
  • HUEBSCH, Eric
    5326 Contern (LU)
  • MASSUEGER, Lars
    8807 Freienbach (CH)
  • THOMI, Cedric
    1233 Sezenove (CH)

(74) Representative: Abitz & Partner 
Postfach 86 01 09
81628 München
81628 München (DE)

   


(54) FOAM ENVELOPE FOR SEALING LARGE VOLUMES