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EP 3 268 331 A1

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(43) Date of publication: 17.01.2018 Bulletin 2018/03 (21) Application number: 16762481.6 (22) Date of filing: 10.03.2016

(51) International Patent Classification (IPC):  C04B 35/628(2006.01) C04B 35/64(2006.01) C04B 35/632(2006.01) C04B 35/657(2006.01) (86) International application number: PCT/US2016/021690 (87) International publication number: WO 2016/145144 (15.09.2016 Gazette 2016/37)

(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: MA MD (30) Priority: 10.03.2015 US 201514643562 (71) Applicant: Pyrotek, Inc. Spokane, WA 99201 (US)	(72) Inventors: LACASSE, Maurice Sherbrooke, QC J1L 1W9 (CA) DESROSIERS, Luc Sherbrooke, QC J1L 1WP (CA) (74) Representative: Held, Stephan  Meissner Bolte Patentanwälte Rechtsanwälte Partnerschaft mbB Widenmayerstraße 47 80538 München 80538 München (DE)