METHOD AND APPARATUS FOR ATTENUATING SOUND OF EXHAUST GASES OF AN ENGINE - Patent 2909455

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EP 2 909 455 A1

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(43)	Date of publication:
	26.08.2015 Bulletin 2015/35

(21)	Application number: 13790455.3

(22)	Date of filing: 06.05.2013

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International Patent Classification (IPC):

F01N 1/08^(2006.01)

F01N 13/18^(2010.01)

(86)	International application number:
	PCT/FI2013/050497

(87)	International publication number:
	WO 2013/171368 (21.11.2013 Gazette 2013/47)

(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

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Priority:

14.05.2012 FI 20125511

(71)	Applicant: S.T. Ritvanen OY
	21200 Raisio (FI)

(72)	Inventor:
	RITVANEN, Tapio FI-21200 Raisio (FI)

(74)	Representative: Kolster Oy Ab
	Iso Roobertinkatu 23 PO Box 148 00121 Helsinki 00121 Helsinki (FI)

(54)	METHOD AND APPARATUS FOR ATTENUATING SOUND OF EXHAUST GASES OF AN ENGINE