AN INSTRUMENT AND A METHOD FOR MEASURING THE DEGREE OF DUST AND DIRT ON A SURFACE - Patent 1147404

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(11)

EP 1 147 404 A1

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(43)	Date of publication:
	24.10.2001 Bulletin 2001/43

(21)	Application number: 99964901.5

(22)	Date of filing: 17.12.1999

(51)	International Patent Classification (IPC)⁷: G01N 21/88, G01N 21/55

(86)	International application number:
	PCT/SE9902/405

(87)	International publication number:
	WO 0039/566 (06.07.2000 Gazette 2000/27)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

17.12.1998 SE 9804398

(71)	Applicant: ACT Advanced Cleaning Technics AB
	515 21 Viskafors (SE)

(72)	Inventor:
	KOUVONEN, Ari S-172 44 Sundbyberg (SE)

(74)	Representative: Andersson, Per Rune
	Albihns Göteborg ABBox 142 401 22 Göteborg 401 22 Göteborg (SE)

(54)	AN INSTRUMENT AND A METHOD FOR MEASURING THE DEGREE OF DUST AND DIRT ON A SURFACE