METHOD FOR PRODUCING CALCIUM FLUORIDE, REUSING METHOD AND RECYCLING METHOD THEREOF

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EP 1 716 081 B8

(12)	CORRECTED EUROPEAN PATENT SPECIFICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 B1)

(48)	Corrigendum issued on:
	24.02.2016 Bulletin 2016/08

(45)	Mention of the grant of the patent:
	23.12.2015 Bulletin 2015/52

(21)	Application number: 04772001.6

(22)	Date of filing: 17.08.2004

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International Patent Classification (IPC):

C01F 11/22^(2006.01)
B01D 9/02^(2006.01)

C02F 1/58^(2006.01)

(86)	International application number:
	PCT/JP2004/012040

(87)	International publication number:
	WO 2005/070831 (04.08.2005 Gazette 2005/31)

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METHOD FOR PRODUCING CALCIUM FLUORIDE, REUSING METHOD AND RECYCLING METHOD THEREOF

VERFAHREN ZUR HERSTELLUNG VON CALCIUMFLUORID, WIEDERVERWENDUNGSVERFAHREN UND REZYKLIERUNGSVERFAHREN DAFÜR

PROCEDE POUR PRODUIRE DU FLUORURE DE CALCIUM, PROCEDE DE REUTILISATION ET PROCEDE DE RECYCLAGE CORRESPONDANTS

(84)	Designated Contracting States:
	DE ES FR GB IT

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Priority:

21.01.2004 JP 2004013191

(43)	Date of publication of application:
	02.11.2006 Bulletin 2006/44

(73)	Proprietor: Morita Chemical Industries Co. Ltd.
	Osaka-shi, Osaka 5410056 (JP)

(72)	Inventors:
	MOMOTA, Kunitaka Osaka-shi, Osaka 5320002 (JP) YAMAMOTO, Kazumasa Osaka-shi, Osaka 5320002 (JP) INOUE, Youichi Osaka-shi, Osaka 5320002 (JP) WATANABE, Shuuichi Osaka-shi, Osaka 5320002 (JP)

(74)	Representative: von Kreisler Selting Werner - Partnerschaft von Patentanwälten und Rechtsanwälten mbB
	Deichmannhaus am Dom Bahnhofsvorplatz 1 50667 Köln 50667 Köln (DE)

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References cited: :

JP-A- 11 130 427
JP-A- 2000 033 386
JP-A- 2003 305 458
US-A1- 2002 117 456

JP-A- 51 110 498
JP-A- 2003 225 678
JP-A- 2004 255 228

DATABASE WPI Week 198151 Thomson Scientific, London, GB; AN 1981-94140D XP002578820 & JP 56 144792 A (HITACHI PLANT ENG & CONSTR CO) 11 November 1981 (1981-11-11)
DATABASE WPI Week 198215 Thomson Scientific, London, GB; AN 1982-29525E XP002578821 & JP 57 038985 A (HITACHI PLANT ENG & CONSTR CO) 3 March 1982 (1982-03-03)
C.J. HUANG ET AL.: "Precipitate flotation of fluoride-containing wastewater from a semiconductor manufacturer" WATER RESEARCH, vol. 33, no. 16, 1999, pages 3403-3412, XP002578819
DATABASE WPI Week 198039 Thomson Scientific, London, GB; AN 1980-68516C XP002578822 & JP 55 104692 A (HITACHI PLANT ENG & CONSTR CO) 11 August 1980 (1980-08-11)

Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).