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Extract from the Register of European Patents

EP About this file: EP0078950

EP0078950 - Process for the preparation of acicular, ferrimagnetic iron oxides [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  11.03.1986
Database last updated on 17.09.2024
Most recent event   Tooltip11.03.1986No opposition filed within time limitpublished on 30.04.1986 [1986/18]
Applicant(s)For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
67063 Ludwigshafen / DE
[N/P]
Former [1983/20]For all designated states
BASF Aktiengesellschaft
Carl-Bosch-Strasse 38
D-67063 Ludwigshafen / DE
Inventor(s)01 / Sarnecki, Wilhelm, Dr.
Woogstrasse 48
D-6703 Limburgerhof / DE
02 / Kovacs, Jenoe, Dr.
Robert-Koch-Strasse 18
D-6712 Bobenheim-Roxheim / DE
03 / Loeser, Werner, Dr.
Klagenfurter Strasse 16
D-6700 Ludwigshafen / DE
04 / Rudolf, Peter, Dr.
Wiesenstrasse 1
D-6708 Neuhofen / DE
05 / Vaeth, Guenter
Woogstrasse 35
D-6703 Limburgerhof / DE
[1983/20]
Application number, filing date82109746.622.10.1982
[1983/20]
Priority number, dateDE1981314387005.11.1981         Original published format: DE 3143870
[1983/20]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report 
No.:EP0078950
Date:18.05.1983
Language:DE
[1983/20]
Type: A3 Search report 
No.:EP0078950
Date:07.09.1983
Language:DE
[1983/36]
Type: B1 Patent specification 
No.:EP0078950
Date:02.05.1985
Language:DE
[1985/18]
Search report(s)(Supplementary) European search report - dispatched on:EP04.07.1983
ClassificationIPC:C01G49/02, H01F1/11
[1983/20]
CPC:
G11B5/70694 (EP,US); C01G49/06 (EP,US); C01G49/08 (EP,US);
C01P2004/10 (EP,US); C01P2006/42 (EP,US)
Designated contracting statesDE,   FR,   GB,   NL [1983/20]
TitleGerman:Verfahren zur Herstellung von nadelförmigen, ferrimagnetischen Eisenoxiden[1983/20]
English:Process for the preparation of acicular, ferrimagnetic iron oxides[1983/20]
French:Procédé de préparation d'oxydes de fer aciculaire, ferrimagnetique[1983/20]
File destroyed:03.03.2001
Examination procedure11.12.1982Examination requested  [1983/20]
11.09.1984Despatch of communication of intention to grant (Approval: )
16.10.1984Communication of intention to grant the patent
30.11.1984Fee for grant paid
30.11.1984Fee for publishing/printing paid
Opposition(s)04.02.1986No opposition filed within time limit [1986/18]
Fees paidRenewal fee
13.10.1984Renewal fee patent year 03
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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[A]EP0014302  (BASF AG [DE]);
 [A]EP0024693  (BASF AG [DE]);
 [A]FR2369214  (MINNESOTA MINING & MFG [US]);
 [A]US4176172  (BENNETCH LEONARD M [US], et al);
 [AD]DE2064804  (HI CRYSTAL CO LTD)
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.