(19)

(11)

EP 3 380 641 A1

(12)

(43) Date of publication: 03.10.2018 Bulletin 2018/40 (21) Application number: 16869287.9 (22) Date of filing: 23.11.2016

(51) International Patent Classification (IPC):  C22C 38/18(2006.01) C22C 38/44(2006.01) C22C 38/50(2006.01) C21D 1/25(2006.01) C22C 38/40(2006.01) C22C 38/46(2006.01) C22C 38/52(2006.01) (86) International application number: PCT/US2016/063622 (87) International publication number: WO 2017/091743 (01.06.2017 Gazette 2017/22)

(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: MA MD (30) Priority: 25.11.2015 US 201562259835 P (71) Applicant: Questek Innovations LLC Evanston, IL 60201 (US)	(72) Inventors: SAAL, James Chicago, IL 60660 (US) OLSON, Gregory, B. Riverwoods, IL 60015 (US) ASPHAHANI, Aziz Ottawa, IL 60614 (US) (74) Representative: Barker Brettell LLP  100 Hagley Road Edgbaston Birmingham B16 8QQ Birmingham B16 8QQ (GB)