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EP0446616

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Extract from the Register of European Patents

EP About this file: EP0446616

EP0446616 - Process for inhibiting corrosion in oil production fluids [Right-click to bookmark this link]
Status	No opposition filed within time limit Status updated on 12.10.1995 Database last updated on 15.06.2024
Most recent event Tooltip	15.08.2008	Change - representative	published on 17.09.2008 [2008/38]
Applicant(s)	For all designated states SCANDINAVIAN OILFIELD CHEMICALS AS Lars Hillesg. 20 B 5000 Bergen / NO
	[N/P]
Former [1991/38]	For all designated states SCANDINAVIAN OILFIELD CHEMICALS AS Lars Hillesg. 20 B N-5000 Bergen / NO
Inventor(s)	01 / Larsen, Arthur Lee Ovre Kalfarlien 6 N-5018 Bergen / NO
	[1991/38]
Representative(s)	Säger, Manfred Säger & Hofmann Patent AG Feldgüetliweg 130 8706 Meilen (ZH) / CH
	[N/P]
Former [2008/38]	Säger, Manfred Säger & Partner Patent- und Rechtsanwaltskanzlei (GbR) Römersteig 2 Postfach 5 7304 Maienfeld / CH
Former [1994/06]	Säger, Manfred, Dipl.-Ing. Patentanwälte Säger & Partner Postfach 81 08 09 D-81908 München / DE
Former [1991/38]	Säger, Manfred, Dipl.-Ing. Patentanwälte Säger & Partner Postfach 81 08 09 D-81908 München / DE
Application number, filing date	91101772.1	08.02.1991
	[1991/38]
Priority number, date	DE19904003893	09.02.1990 Original published format: DE 4003893
	[1991/38]
Filing language	EN
Procedural language	EN
Publication	Type:	A1 Application with search report
	No.:	EP0446616
	Date:	18.09.1991
	Language:	EN
	[1991/38]
	Type:	B1 Patent specification
	No.:	EP0446616
	Date:	07.12.1994
	Language:	EN
	[1994/49]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	26.06.1991
Classification	IPC:	E21B41/02, // C23F11/14	[1991/38]
	CPC:	C23F11/145 (EP,US); C09K8/54 (EP,US); C23F11/144 (EP,US); Y10S166/902 (EP,US); Y10S507/939 (EP,US)
Designated contracting states	AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LI, LU, NL, SE [1991/38]
Title	German:	Verfahren zur Korrosionshemmung in Erdölförderflüssigkeiten	[1991/38]
	English:	Process for inhibiting corrosion in oil production fluids	[1991/38]
	French:	Procédé d'inhibition de corrosion dans des fluides de récupération d'huile	[1991/38]
Examination procedure	29.01.1992	Examination requested [1992/14]
	21.06.1993	Despatch of a communication from the examining division (Time limit: M06)
	21.12.1993	Reply to a communication from the examining division
	15.02.1994	Despatch of communication of intention to grant (Approval: Yes)
	08.06.1994	Communication of intention to grant the patent
	12.08.1994	Fee for grant paid
	12.08.1994	Fee for publishing/printing paid
Opposition(s)	08.09.1995	No opposition filed within time limit [1995/48]
Fees paid	Renewal fee
	26.02.1993	Renewal fee patent year 03
	19.05.1994	Renewal fee patent year 04
	Penalty fee
	Additional fee for renewal fee
	28.02.1994	04 M06 Fee paid on 19.05.1994
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	07.12.1994
	BE	07.12.1994
	CH	07.12.1994
	DK	07.12.1994
	ES	07.12.1994
	GR	07.12.1994
	IT	07.12.1994
	LI	07.12.1994
	LU	28.02.1995
	SE	07.03.1995
	[2008/02]
Former [2002/25]	AT	07.12.1994
	BE	07.12.1994
	CH	07.12.1994
	DK	07.12.1994
	ES	07.12.1994
	GR	07.12.1994
	IT	07.12.1994
	LI	07.12.1994
	LU	28.02.1995
	SE	07.03.1995
Former [2000/05]	AT	07.12.1994
	BE	07.12.1994
	CH	07.12.1994
	DK	07.12.1994
	GR	07.12.1994
	IT	07.12.1994
	LI	07.12.1994
	LU	28.02.1995
	SE	07.03.1995
Former [1999/42]	AT	07.12.1994
	BE	07.12.1994
	CH	07.12.1994
	DK	07.12.1994
	IT	07.12.1994
	LI	07.12.1994
	SE	07.03.1995
Former [1998/15]	AT	07.12.1994
	BE	07.12.1994
	CH	07.12.1994
	DK	07.12.1994
	LI	07.12.1994
	SE	07.03.1995
Former [1995/42]	AT	07.12.1994
	BE	07.12.1994
	CH	07.12.1994
	LI	07.12.1994
	SE	07.03.1995
Former [1995/40]	AT	07.12.1994
	CH	07.12.1994
	LI	07.12.1994
Former [1995/31]	CH	07.12.1994
	LI	07.12.1994
Documents cited:	Search	[X]US3054750 (JOLLY SAMUEL E);
		[A]FR1451354 (PROD CHIM D AUBY SOC D);
		[A]GB1062359 (ARMOUR & CO);
		[A]US4201678 (FISCHER PAUL W [US], et al);
		[A]DD234897 (GOMMERN ERDOEL ERDGAS [DD])

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.

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