(19)

(11)

EP 3 743 558 A1

(12)

(43) Date of publication: 02.12.2020 Bulletin 2020/49 (21) Application number: 19712382.1 (22) Date of filing: 06.03.2019

(51) International Patent Classification (IPC):  D21H 17/00(2006.01) D21H 17/09(2006.01) D21H 21/24(2006.01) D21C 5/00(2006.01) D21H 17/42(2006.01) (86) International application number: PCT/US2019/020862 (87) International publication number: WO 2019/177826 (19.09.2019 Gazette 2019/38)

(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: 15.03.2018 US 201862643224 P 24.07.2018 US 201862702395 P (71) Applicant: Buckman Laboratories International, Inc. Memphis, TN 38108 (US)	(72) Inventors: HOEKSTRA, Philip M. Memphis, TN 38108-0305 (US) HANUMANSETTY, Srinivas Memphis, TN 38108-0305 (US) (74) Representative: Dehns  St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)