Deutsch English Français

Contact

EP0306559

European procedure

Quick help

Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability

2022.02.11

More...

News flashes

Italy joins the Federated Register

Click here for more information on the Federated Register.

2025-06-12

More...

Extract from the Register of European Patents

EP About this file: EP0306559

EP0306559 - Flotation device [Right-click to bookmark this link]
Status	The application is deemed to be withdrawn Status updated on 01.10.1993 Database last updated on 11.04.2026
Most recent event Tooltip	07.07.2007	Change - inventor	published on 08.08.2007 [2007/32]
Applicant(s)	For all designated states RWO Maschinenfabrik Armaturen- und Apparatebau GmbH Am Dammacker 12 D-28201 Bremen / DE
	[N/P]
Former [1989/11]	For all designated states RWO Maschinenfabrik Armaturen- und Apparatebau GmbH Am Dammacker 12 D-28201 Bremen / DE
Inventor(s)	01 / Kupka, Karl-Heinz Ossenhöfe 6 G D-2804 Lilienthal / DE
	02 / Wildgrube, Rüdiger Messterfeld 1 D-2807 Achim 1 / DE
	[1989/11]
Representative(s)	Goddar, Heinz J., et al Boehmert & Boehmert Anwaltspartnerschaft mbB Pettenkoferstrasse 22 80336 München / DE
	[N/P]
Former [1989/11]	Goddar, Heinz J., Dr., et al FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 D-80801 München / DE
Application number, filing date	87118020.4	05.12.1987
	[1989/11]
Priority number, date	DE19873729995	08.09.1987 Original published format: DE 3729995
	[1989/11]
Filing language	DE
Procedural language	DE
Publication	Type:	A1 Application with search report
	No.:	EP0306559
	Date:	15.03.1989
	Language:	DE
	[1989/11]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	27.07.1988
Classification	IPC:	C02F1/24, B03D1/14, B01D17/035, B01D17/05	[1989/11]
	CPC:	B03D1/1431 (EP); B01D17/0205 (EP); B01D17/047 (EP); B03D1/1462 (EP); B03D1/1475 (EP); C02F1/24 (EP)
	C-Set:	B01D17/0205, B01D17/047 (EP)
Designated contracting states	AT, CH, DE, ES, FR, GB, GR, IT, LI, NL, SE [1989/11]
Title	German:	Flotationsanlage	[1989/11]
	English:	Flotation device	[1989/11]
	French:	Installation de flottation	[1989/11]
File destroyed:	12.06.1999
Examination procedure	17.08.1989	Examination requested [1989/42]
	30.03.1990	Despatch of a communication from the examining division (Time limit: M06)
	11.09.1990	Reply to a communication from the examining division
	17.01.1991	Despatch of communication of intention to grant (Approval: Yes)
	12.02.1993	Communication of intention to grant the patent
	25.05.1993	Application deemed to be withdrawn, date of legal effect [1993/47]
	24.06.1993	Despatch of communication that the application is deemed to be withdrawn, reason: fee for grant / fee for printing not paid in time [1993/47]
Fees paid	Renewal fee
	28.12.1989	Renewal fee patent year 03
	11.12.1990	Renewal fee patent year 04
	09.12.1991	Renewal fee patent year 05
	24.12.1992	Renewal fee patent year 06
Opt-out from the exclusive Tooltip competence of the Unified Patent Court	See the Register of the Unified Patent Court for opt-out data
	Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:	Search	[X] WATER RESEARCH, Band 13, Nr. 4, April 1979, Seiten 385-391; A. MATHEWS et al.: "Treatment of oil contaminated waste waters by foam fractionation" [X]
		[Y] CHEMICAL ENGINEERING DESKBOOK, Band 82, Nr. 21, 6. Oktober 1975, Seiten 49-61; L.D. LASH et al.: "Primary-waste-treatment methods" [Y]

The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.