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EP0270852

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Extract from the Register of European Patents

EP About this file: EP0270852

EP0270852 - Process for the preparation of pure dimethyl ether [Right-click to bookmark this link]
Status	No opposition filed within time limit Status updated on 12.11.1992 Database last updated on 28.03.2026
Most recent event Tooltip	23.10.2009	Change - representative	published on 25.11.2009 [2009/48]
Applicant(s)	For all designated states RWE-DEA Aktiengesellschaft für Mineraloel und Chemie Postfach 60 04 49 22204 Hamburg / DE
	[N/P]
Former [1990/34]	For all designated states RWE-DEA Aktiengesellschaft für Mineraloel und Chemie Postfach 60 04 49 D-22204 Hamburg / DE
Former [1988/24]	For all designated states Union Rheinische Braunkohlen Kraftstoff Aktiengesellschaft Ludwigshafener Strasse o. Nr. Postfach 1663 D-5047 Wesseling / DE
Inventor(s)	01 / Dornhagen, Horst, Dr. Auf dem Radacker 21 D-5047 Wesseling / DE
	02 / Hammer, Hartmut, Dr. Leyboldstrasse 21 D-5000 Köln / DE
	03 / Meisenburg, Ewald Höhenring 60 D-5357 Heimerzheim / DE
	04 / Haas, Bernd, Dr. Rabenweg 6 D-5047 Wesseling / DE
	[1988/24]
Representative(s)	Schupfner, Gerhard D. Müller Schupfner & Partner Patentanwälte Parkstrasse 1 21244 Buchholz / DE
	[2009/48]
Former [1990/32]	Schupfner, Gerhard D. Patentanwälte Müller, Schupfner & Gauger Postfach 17 53 D-21236 Buchholz / DE
Application number, filing date	87116477.8	07.11.1987
	[1988/24]
Priority number, date	AU19860065506	18.11.1986 Original published format: AU 6550686
	DE19863642845	16.12.1986 Original published format: DE 3642845
	[1988/24]
Filing language	DE
Procedural language	DE
Publication	Type:	A2 Application without search report
	No.:	EP0270852
	Date:	15.06.1988
	Language:	DE
	[1988/24]
	Type:	A3 Search report
	No.:	EP0270852
	Date:	28.12.1988
	Language:	DE
	[1988/52]
	Type:	B1 Patent specification
	No.:	EP0270852
	Date:	08.01.1992
	Language:	DE
	[1992/02]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	09.11.1988
Classification	IPC:	C07C43/04, C07C41/42, C07C41/09	[1988/24]
	CPC:	C07C41/09 (EP); C07C41/42 (EP)
	C-Set:	C07C41/09, C07C43/043 (EP); C07C41/42, C07C43/043 (EP)
Designated contracting states	AT, BE, CH, DE, ES, FR, GB, GR, IT, LI, LU, NL, SE [1988/24]
Title	German:	Verfahren zur Herstellung von reinem Dimethylether	[1988/24]
	English:	Process for the preparation of pure dimethyl ether	[1988/24]
	French:	Procédé pour la préparation de diméthyl-éther pur	[1988/24]
Miscellaneous	EPB 1992/02: Teilanmeldung 91105495.5 eingereicht am 07/11/87
	EPB 1992/02: Divisional application 91105495.5 filed on 07/11/87
	EPB 1992/02: Demande divisionnaire 91105495.5 déposée le 07/11/87
Examination procedure	13.11.1987	Examination requested [1988/24]
	27.07.1990	Despatch of a communication from the examining division (Time limit: M08)
	04.02.1991	Reply to a communication from the examining division
	26.03.1991	Despatch of a communication from the examining division (Time limit: M02)
	08.04.1991	Reply to a communication from the examining division
	28.05.1991	Despatch of communication of intention to grant (Approval: Yes)
	28.06.1991	Communication of intention to grant the patent
	24.08.1991	Fee for grant paid
	24.08.1991	Fee for publishing/printing paid
Divisional application(s)	EP91105495.5 / EP0455004
Opposition(s)	09.10.1992	No opposition filed within time limit [1992/53]
Fees paid	Renewal fee
	04.11.1988	Renewal fee patent year 03
	28.11.1990	Renewal fee patent year 04
	21.12.1990	Renewal fee patent year 05
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.
Lapses during opposition Tooltip	GR	08.01.1992
	SE	08.01.1992
	[2000/04]
Former [1992/32]	SE	08.01.1992

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