(19)

(11)

EP 2 401 237 A1

(12)

(43) Date of publication: 04.01.2012 Bulletin 2012/01 (21) Application number: 09840896.6 (22) Date of filing: 26.02.2009

(51) International Patent Classification (IPC):  C04B 9/02(2006.01) (86) International application number: PCT/US2009/001197 (87) International publication number: WO 2010/098734 (02.09.2010 Gazette 2010/35)

(84) Designated Contracting States: 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 SE SI SK TR (71) Applicant: PPT Research, Inc. Allentown, PA 18109 (US)	(72) Inventor: WARD, Irl, E. Bethlehem, PA 18015 (US) (74) Representative: Bauer Vorberg Kayser Patentanwälte  Goltsteinstrasse 87 50968 Köln 50968 Köln (DE)