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Extract from the Register of European Patents

EP About this file: EP0218445

EP0218445 - Thin film magnetic heads [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  19.08.1992
Database last updated on 02.07.2024
Most recent event   Tooltip07.07.2007Change - inventorpublished on 08.08.2007  [2007/32]
Applicant(s)For all designated states
Sony Corporation
7-35 Kitashinagawa 6-chome
Shinagawa-ku
Tokyo 141 / JP
[N/P]
Former [1987/16]For all designated states
SONY CORPORATION
7-35 Kitashinagawa 6-chome Shinagawa-ku
Tokyo 141 / JP
Inventor(s)01 / Ikeda, Yoshito Pat. Div. Sony Corp.
6-7-35 Kitashinagawa Shinagawa-ku
Tokyo 141 / JP
02 / Narisawa, Hiroaki Pat. Div. Sony Corp.
6-7-35 Kitashinagawa Shinagawa-ku
Tokyo 141 / JP
03 / Wakabayashi, Noboru Pat. Div. Sony Corp.
6-7-35 Kitashinagawa Shinagawa-ku
Tokyo 141 / JP
[1987/16]
Representative(s)Thomas, Christopher Hugo, et al
D. Young & Co, 21 New Fetter Lane
London EC4A 1DA / GB
[1987/16]
Application number, filing date86307484.530.09.1986
[1987/16]
Priority number, dateJP1985021873401.10.1985         Original published format: JP 21873485
JP1985021873501.10.1985         Original published format: JP 21873585
[1987/16]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0218445
Date:15.04.1987
Language:EN
[1987/16]
Type: A3 Search report 
No.:EP0218445
Date:30.08.1989
Language:EN
[1989/35]
Search report(s)(Supplementary) European search report - dispatched on:EP13.07.1989
ClassificationIPC:G11B5/31
[1987/16]
CPC:
G11B5/31 (EP,US); G11B5/3116 (EP,US)
Designated contracting statesDE,   FR,   GB,   NL [1987/16]
TitleGerman:Dünnfilmmagnetköpfe[1987/16]
English:Thin film magnetic heads[1987/16]
French:Têtes magnétiques à films minces[1987/16]
File destroyed:12.06.1999
Examination procedure08.01.1990Examination requested  [1990/10]
07.03.1991Despatch of a communication from the examining division (Time limit: M06)
31.08.1991Reply to a communication from the examining division
05.12.1991Despatch of a communication from the examining division (Time limit: M04)
16.04.1992Application deemed to be withdrawn, date of legal effect  [1992/41]
14.05.1992Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time  [1992/41]
Fees paidRenewal fee
19.09.1988Renewal fee patent year 03
14.09.1989Renewal fee patent year 04
14.09.1990Renewal fee patent year 05
21.12.1990Renewal fee patent year 06
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Documents cited:Search[X]JP59075421  ;
 [A]US4190872  (JONES ROBERT E JR [US], et al);
 [Y]US4402801  (OMATA YUJI [JP], et al);
 [A]US4490760  (KAMINAKA NOBUYUKI [JP], et al);
 [Y]JPS60113312  (SUWA SEIKOSHA KK)
 [X]  - PATENT ABSTRACTS OF JAPAN vol. 8, no. 183 (P-296)(1620) 23 August 1984, & JP-A-59 075421 (HITACHI SEISAKUSHO K.K.) 28 April 1984,, & JP59075421 A 19840428
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.