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EP0020890

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Extract from the Register of European Patents

EP About this file: EP0020890

EP0020890 - Process for dechlorinating the anolyte of an alkali chloride electrolysis cell [Right-click to bookmark this link]
Status	No opposition filed within time limit Status updated on 12.11.1984 Database last updated on 30.03.2026
Most recent event Tooltip	12.11.1984	No opposition filed within time limit	published on 16.01.1985 [1985/03]
Applicant(s)	For all designated states HOECHST AKTIENGESELLSCHAFT 65926 Frankfurt am Main / DE
	[N/P]
Former [1983/12]	For all designated states HOECHST AKTIENGESELLSCHAFT D-65926 Frankfurt am Main / DE
Former [1981/01]	For all designated states HOECHST AKTIENGESELLSCHAFT Postfach 80 03 20 D-65926 Frankfurt / DE
Inventor(s)	01 / Bergner, Dieter, Dr. Im Stückes 8a D-6233 Kelkheim (Taunus) / DE
	02 / Hannesen, Kurt An der Ziegelei 32 D-6233 Kelkheim (Taunus) / DE
	03 / Müller, Wolfgang Drei Linden Strasse 33 D-6232 Bad Soden am Taunus / DE
	04 / Schulte, Wilfried Am Forsthaus 2 D-6238 Hofheim am Taunus / DE
	[1981/01]
Application number, filing date	80101828.4	05.04.1980
	[1981/01]
Priority number, date	DE19792914870	12.04.1979 Original published format: DE 2914870
	[1981/01]
Filing language	DE
Procedural language	DE
Publication	Type:	A1 Application with search report
	No.:	EP0020890
	Date:	07.01.1981
	Language:	DE
	[1981/01]
	Type:	B1 Patent specification
	No.:	EP0020890
	Date:	23.03.1983
	Language:	DE
	[1983/12]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	30.09.1980
Classification	IPC:	C25B15/08, C25B1/34	[1981/01]
	CPC:	C25B15/08 (EP,US)
Designated contracting states	AT, BE, CH, DE, FR, GB, IT, LI, NL, SE [1981/01]
Title	German:	Verfahren zur Entchlorung des Anolyten einer Alkalichlorid-Elektrolysezelle	[1981/01]
	English:	Process for dechlorinating the anolyte of an alkali chloride electrolysis cell	[1981/01]
	French:	Procédé pour la déchloruration de l'anolyte d'une cellule d'électrolyse de chlorure alcaline	[1981/01]
Examination procedure	07.04.1981	Examination requested [1981/24]
	14.06.1982	Despatch of communication of intention to grant (Approval: )
	10.09.1982	Communication of intention to grant the patent
	03.12.1982	Fee for grant paid
	03.12.1982	Fee for publishing/printing paid
Opposition(s)	24.12.1983	No opposition filed within time limit [1985/03]
Fees paid	Renewal fee
	09.03.1982	Renewal fee patent year 03
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