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EP0171822

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Extract from the Register of European Patents

EP About this file: EP0171822

EP0171822 - Process for the production of pseudocumene or durene [Right-click to bookmark this link]
Status	No opposition filed within time limit Status updated on 24.12.1991 Database last updated on 09.04.2026
Most recent event Tooltip	12.11.1999	Lapse of the patent in a contracting state New state(s): LU	published on 29.12.1999 [1999/52]
Applicant(s)	For all designated states IDEMITSU KOSAN COMPANY LIMITED 1-1, Marunouchi 3-chome Chiyoda-ku Tokyo 100-0005 / JP
	[N/P]
Former [1986/08]	For all designated states IDEMITSU KOSAN COMPANY LIMITED 1-1, Marunouchi 3-chome Chiyoda-ku Tokyo 100 / JP
Inventor(s)	01 / Haruhito, Sato No. 1660, Kamiizumi Sodegaura-machi Kimitsu-gun Chiba-ken / JP
	[1986/08]
Representative(s)	Türk, Dietmar Türk, Gille, Hrabal, Leifert Patentanwälte Brucknerstrasse 20 40593 Düsseldorf / DE
	[N/P]
Former [1987/13]	Türk, Dietmar, Dr. rer. nat. Türk, Gille, Hrabal, Leifert Patentanwälte Brucknerstrasse 20 D-40593 Düsseldorf / DE
Former [1986/08]	Türk, Dietmar, Dr. rer. nat. Türk, Gille + Hrabal Patentanwälte Bruckner Strasse 20 D-40593 Düsseldorf / DE
Application number, filing date	85110727.6	22.09.1983
	[1986/08]
Priority number, date	JP19820164999	24.09.1982 Original published format: JP 16499982
	[1986/08]
Filing language	EN
Procedural language	EN
Publication	Type:	A1 Application with search report
	No.:	EP0171822
	Date:	19.02.1986
	Language:	EN
	[1986/08]
	Type:	B1 Patent specification
	No.:	EP0171822
	Date:	20.02.1991
	Language:	EN
	[1991/08]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	17.12.1985
Classification	IPC:	C07C15/02, C07C2/86	[1986/08]
	CPC:	C07C2/864 (EP,US); C07C2/865 (EP,US); C07C2521/02 (EP,US); C07C2521/08 (EP,US); C07C2529/86 (EP,US)
	C-Set:	C07C2/864, C07C15/02 (EP,US); C07C2/865, C07C15/02 (US,EP)
Designated contracting states	AT, BE, CH, DE, FR, GB, IT, LI, LU, NL, SE [1986/08]
Title	German:	Verfahren zur Herstellung von Pseudocumol oder von Durol	[1986/08]
	English:	Process for the production of pseudocumene or durene	[1986/08]
	French:	Procédé pour la production de pseudocumène ou de durène	[1986/08]
Examination procedure	12.08.1986	Examination requested [1986/43]
	15.01.1987	Despatch of a communication from the examining division (Time limit: M06)
	16.07.1987	Reply to a communication from the examining division
	15.03.1989	Despatch of a communication from the examining division (Time limit: M04)
	02.06.1989	Reply to a communication from the examining division
	26.03.1990	Despatch of communication of intention to grant (Approval: Yes)
	08.08.1990	Communication of intention to grant the patent
	10.11.1990	Fee for grant paid
	10.11.1990	Fee for publishing/printing paid
Parent application(s) Tooltip	EP83109417.2 / EP0104607
Opposition(s)	22.11.1991	No opposition filed within time limit [1992/08]
Fees paid	Renewal fee
	18.09.1985	Renewal fee patent year 03
	15.08.1986	Renewal fee patent year 04
	28.08.1987	Renewal fee patent year 05
	13.09.1988	Renewal fee patent year 06
	14.09.1989	Renewal fee patent year 07
	13.09.1990	Renewal fee patent year 08
	15.12.1990	Renewal fee patent year 09
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	AT	20.02.1991
	BE	20.02.1991
	CH	20.02.1991
	LI	20.02.1991
	NL	20.02.1991
	SE	20.02.1991
	LU	30.09.1991
	[1999/52]
Former [1992/10]	AT	20.02.1991
	BE	20.02.1991
	CH	20.02.1991
	LI	20.02.1991
	NL	20.02.1991
	SE	20.02.1991
Former [1991/52]	AT	20.02.1991
	CH	20.02.1991
	LI	20.02.1991
	NL	20.02.1991
	SE	20.02.1991
Former [1991/49]	AT	20.02.1991
	NL	20.02.1991
	SE	20.02.1991
Former [1991/39]	SE	20.02.1991

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.