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EP0088392

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Extract from the Register of European Patents

EP About this file: EP0088392

EP0088392 - Process for the preparation of perylene-3,4,9,10-tetracarboxylic acid-N,N'-dialkyldiimide pigments [Right-click to bookmark this link]
Status	No opposition filed within time limit Status updated on 30.10.1985 Database last updated on 24.03.2026
Most recent event Tooltip	30.10.1985	No opposition filed within time limit	published on 02.01.1986 [1986/01]
Applicant(s)	For all designated states HOECHST AKTIENGESELLSCHAFT 65926 Frankfurt am Main / DE
	[N/P]
Former [1983/37]	For all designated states HOECHST AKTIENGESELLSCHAFT D-65926 Frankfurt am Main / DE
Inventor(s)	01 / Spietschka, Ernst, Dr. Kirchweg 3 D-6270 Idstein/Taunus / DE
	02 / Urban, Manfred Steigerwaldstrasse 2a D-6200 Wiesbaden / DE
	[1983/37]
Application number, filing date	83102122.5	04.03.1983
	[1983/37]
Priority number, date	DE19823208192	06.03.1982 Original published format: DE 3208192
	[1983/37]
Filing language	DE
Procedural language	DE
Publication	Type:	A1 Application with search report
	No.:	EP0088392
	Date:	14.09.1983
	Language:	DE
	[1983/37]
	Type:	B1 Patent specification
	No.:	EP0088392
	Date:	27.12.1984
	Language:	DE
	[1984/52]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	13.07.1983
Classification	IPC:	C09B5/62, C07D471/06, C08K5/00, C09D17/00	[1983/37]
	CPC:	C09B5/62 (EP,US)
Designated contracting states	CH, DE, FR, GB, LI [1983/37]
Title	German:	Verfahren zur Herstellung von Perylen-3,4,9,10-tetracarbonsäure-N,N'-dialkyl-diimid-Pigmenten	[1983/37]
	English:	Process for the preparation of perylene-3,4,9,10-tetracarboxylic acid-N,N'-dialkyldiimide pigments	[1983/37]
	French:	Procédé de préparation de pigments de N,N'-dialkyldiimides de l'acide pérylène-3,4,9,10-tétracarboxylique	[1983/37]
Examination procedure	17.10.1983	Examination requested [1983/51]
	18.05.1984	Despatch of communication of intention to grant (Approval: )
	07.06.1984	Communication of intention to grant the patent
	06.09.1984	Fee for grant paid
	06.09.1984	Fee for publishing/printing paid
Opposition(s)	28.09.1985	No opposition filed within time limit [1986/01]
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