Deutsch English Français

Contact

EP0063713

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: EP0063713

EP0063713 - Dichroic anthraquinone dyes, liquid crystal dielectrics containing them and electro-optical display [Right-click to bookmark this link]
Status	The application has been withdrawn Status updated on 06.12.1983 Database last updated on 08.04.2026
Most recent event Tooltip	07.07.2007	Change - inventor	published on 08.08.2007 [2007/32]
Applicant(s)	For all designated states Merck Patent GmbH Frankfurter Strasse 253 64271 Darmstadt / DE
	[N/P]
Former [1982/44]	For all designated states MERCK PATENT GmbH Postfach, Frankfurter Strasse 250 D-64271 Darmstadt / DE
Inventor(s)	01 / Eidenschink, Rudolf, Dr. Erlenweg 17 D-6110 Dieburg / DE
	02 / Krause, Joachim, Dr. Samuel-Morse-Strasse 14 D-6110 Dieburg / DE
	03 / Weber, Georg Wilhelm-Leuschner-Strasse 38 D-6106 Erzhausen / DE
	[1982/44]
Application number, filing date	82102805.7	02.04.1982
	[1982/44]
Priority number, date	DE19813115762	18.04.1981 Original published format: DE 3115762
	[1982/44]
Filing language	DE
Procedural language	DE
Publication	Type:	A1 Application with search report
	No.:	EP0063713
	Date:	03.11.1982
	Language:	DE
	[1982/44]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	30.08.1982
Classification	IPC:	C09B1/20, C09B1/50, C09B1/54, C09K3/34, G02F1/137	[1982/44]
	CPC:	C09B1/20 (EP); C09B1/50 (EP); C09B1/545 (EP); C09K19/603 (EP)
Designated contracting states	AT, CH, DE, FR, GB, IT, LI, NL [1982/44]
Title	German:	Dichroitische Anthrachinonfarbstoffe, diese enthaltende flüssigkristalline Dielektrika und elektrooptisches Anzeigeelement	[1982/44]
	English:	Dichroic anthraquinone dyes, liquid crystal dielectrics containing them and electro-optical display	[1982/44]
	French:	Colorants anthraquinoniques dichroiques, des diélectriques de cristaux liquides les contenant et des dispositifs d'affichage électro-optiques	[1982/44]
File destroyed:	18.06.1989
Examination procedure	09.03.1983	Examination requested [1983/20]
	05.08.1983	Despatch of a communication from the examining division (Time limit: M04)
	23.11.1983	Application withdrawn by applicant [1984/06]
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] FR2451392 (MITSUI TOATSU CHEMICALS et al.) [X]
		[X] DE1807492 (SANDOZ AG et al.) [X]
		[X] US3043646 (PAUL BUECHELER et al.) [X]
		[X] FR2439842 (BAYER AG et al.) [X]
		[X] FR1431311 (ICI LTD et al.) [X]
		[X] GB2014600 (BAYER AG et al.) [X]
		[XP] EP0038460 (BAYER AG et al.) [XP]

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.