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EP0021211

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Extract from the Register of European Patents

EP About this file: EP0021211

EP0021211 - Process for the preparation of dimethyl carbonate [Right-click to bookmark this link]
Status	No opposition filed within time limit Status updated on 14.09.2016 Database last updated on 09.04.2026
Most recent event Tooltip	14.09.2016	No opposition filed within time limit
Applicant(s)	For all designated states BAYER AG 51368 Leverkusen / DE
	[N/P]
Former [1981/01]	For all designated states BAYER AG D-51368 Leverkusen / DE
Inventor(s)	01 / Buysch, Hans-Josef, Dr. Brandenburgerstrasse 28 D-4150 Krefeld 1 / DE
	02 / Krimm, Heinrich, Dr. Heyenbaumstrasse 65 D-4150 Krefeld 1 / DE
	03 / Böhm, Siegfried, Dr. Silesiusstrasse 80 D-5000 Köln 80 / DE
	[1981/01]
Application number, filing date	80103188.1	09.06.1980
	[1981/01]
Priority number, date	DE19792925209	22.06.1979 Original published format: DE 2925209
	[1981/01]
Filing language	DE
Procedural language	DE
Publication	Type:	A1 Application with search report
	No.:	EP0021211
	Date:	07.01.1981
	Language:	DE
	[1981/01]
	Type:	B1 Patent specification
	No.:	EP0021211
	Date:	14.07.1982
	Language:	DE
	[1982/28]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	03.10.1980
Classification	IPC:	C07C69/96, C07C68/02	[1981/01]
	CPC:	C07C68/02 (EP,US)
	C-Set:	C07C68/02, C07C69/96 (EP,US)
Designated contracting states	BE, CH, DE, FR, GB, IT, LI, NL [1981/01]
Title	German:	Verfahren zur Herstellung von Dimethylcarbonat	[1981/01]
	English:	Process for the preparation of dimethyl carbonate	[1981/01]
	French:	Procédé de préparation de carbonate de diméthyle	[1981/01]
Examination procedure	09.06.1980	Examination requested [1981/01]
	18.03.1981	Despatch of a communication from the examining division (Time limit: M04)
	30.03.1981	Reply to a communication from the examining division
	05.08.1981	Despatch of communication of intention to grant (Approval: )
	23.11.1981	Communication of intention to grant the patent
	11.12.1981	Fee for grant paid
	11.12.1981	Fee for publishing/printing paid
Opposition(s)	14.04.1983	No opposition filed within time limit [ N /P ]
Fees paid	Renewal fee
	15.06.1982	Renewal fee patent year 03
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	US2787631 (STEVENS HENRY C et al.)
		DE349010 (BOEHRINGER & SOEHNE GMBH et al.)
		DE1210853 (BAYER AG et al.)

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.