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Extract from the Register of European Patents

EP About this file: EP0094775

EP0094775 - A method of preparing and reading information which is permananently recorded on a magnetic layer [Right-click to bookmark this link]
Former [1983/47]Improvements relating to magnetic recordings
[1989/01]
StatusNo opposition filed within time limit
Status updated on  14.12.1989
Database last updated on 03.09.2024
Most recent event   Tooltip29.08.2008Change - representativepublished on 01.10.2008  [2008/40]
Applicant(s)For all designated states
EMI Limited
Blyth Road Hayes
Middlesex, UB3 1BP / GB
[N/P]
Former [1983/47]For all designated states
EMI Limited
Blyth Road
Hayes Middlesex, UB3 1BP / GB
Inventor(s)01 / Sansom, David John
27, Crofton Close Ottershaw
Chertsey Surrey, KT16 0LR / GB
[1983/47]
Representative(s)Marsh, Robin Geoffrey
THORN EMI Patents Limited
Central Research Laboratories
Dawley Road
Hayes, Middlesex
UB3 1HH / GB
[N/P]
Former [2008/40]Marsh, Robin Geoffrey
THORN EMI Patents Limited Central Research Laboratories Dawley Road Hayes, Middlesex
UB3 1HH / GB
Former [1983/47]Marsh, Robin Geoffrey
THORN EMI Patents Limited Central Research Laboratories Dawley Road
Hayes, Middlesex UB3 1HH / GB
Application number, filing date83302586.909.05.1983
[1983/47]
Priority number, dateGB1982001450018.05.1982         Original published format: GB 8214500
[1983/47]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0094775
Date:23.11.1983
Language:EN
[1983/47]
Type: A3 Search report 
No.:EP0094775
Date:12.02.1986
Language:EN
[1986/07]
Type: B1 Patent specification 
No.:EP0094775
Date:04.01.1989
Language:EN
[1989/01]
Search report(s)(Supplementary) European search report - dispatched on:EP10.12.1985
ClassificationIPC:G11B5/02, G11B5/62, G11B5/84
[1983/47]
CPC:
G11B5/3903 (EP,US); G06K19/12 (EP,US); G07F7/086 (EP,US);
G11B5/70 (EP,US); G11B5/852 (EP,US)
Designated contracting statesDE,   FR,   GB,   NL [1983/47]
TitleGerman:Verfahren zur Vorbereitung und zum Lesen von Information,die in einer magnetischen Schicht permanent aufgezeichnet ist[1989/01]
English:A method of preparing and reading information which is permananently recorded on a magnetic layer[1989/01]
French:Procédé pour la préparation et la lecture d'information enregistrée d'une façon permanente dans une couche magnétique[1989/01]
Former [1983/47]Magnetische Aufzeichnungen
Former [1983/47]Improvements relating to magnetic recordings
Former [1983/47]Enregistrement magnétique
Examination procedure18.06.1986Examination requested  [1986/35]
27.11.1987Despatch of a communication from the examining division (Time limit: M04)
07.03.1988Reply to a communication from the examining division
24.05.1988Despatch of communication of intention to grant (Approval: Yes)
06.07.1988Communication of intention to grant the patent
28.07.1988Fee for grant paid
28.07.1988Fee for publishing/printing paid
Opposition(s)05.10.1989No opposition filed within time limit [1990/05]
Fees paidRenewal fee
01.04.1985Renewal fee patent year 03
19.03.1986Renewal fee patent year 04
09.04.1987Renewal fee patent year 05
20.04.1988Renewal fee patent year 06
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Documents cited:Search[AD]DE2545959  (EMI LTD);
 [AD]US4023204  (LEE CYRIL ARTHUR);
 [A]GB2029074  (EMI LTD)
ExaminationGB1529937
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.