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EP 4 304 542 A1

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(43) Date of publication: 17.01.2024 Bulletin 2024/03 (21) Application number: 22712217.3 (22) Date of filing: 09.03.2022

(51) International Patent Classification (IPC):  A61F 13/15(2006.01) A61L 15/28(2006.01) D04H 1/498(2012.01) A61F 13/47(2006.01) A61F 13/537(2006.01) D04H 1/425(2012.01) D04H 1/58(2012.01) A61F 13/531(2006.01) (52) Cooperative Patent Classification (CPC): A61F 13/47; A61F 2013/530051; A61F 13/531; A61F 2013/5315; A61F 2013/53445; A61F 13/53717; A61F 13/5376; D04H 1/498; D04H 1/425; A61L 15/28; A61L 15/60; A61L 15/42   C-Sets: A61L 15/28, C08L 1/00; (86) International application number: PCT/US2022/019514 (87) International publication number: WO 2022/192371 (15.09.2022 Gazette 2022/37)

(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: 09.03.2021 US 202163158471 P 23.02.2022 US 202217678588 (71) Applicant: International Paper Company Memphis, TN 38197 (US)	(72) Inventors: ZHANG, Jun Bellevue, WA 98006 (US) ENG, Ryan, Joel Seattle, WA 98102 (US) DIEGO-DEGUZMAN, June, Maricel Lakewood, WA 98498 (US) MILLER, Charlles, E. Federal Way, WA 98003 (US) (74) Representative: Fish & Richardson P.C.  Highlight Business Towers Mies-van-der-Rohe-Straße 8 80807 München 80807 München (DE)