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Extract from the Register of European Patents

EP About this file: EP0730774

EP0730774 - THIN FILM MAGNETIC HEADS WITH THIN NICKEL UNDERLAYERS [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  19.02.1999
Database last updated on 03.10.2024
Most recent event   Tooltip28.12.2007Lapse of the patent in a contracting state
Updated state(s): FR
published on 30.01.2008  [2008/05]
Applicant(s)For all designated states
SEAGATE TECHNOLOGY, INC.
920 Disc Drive, P.O. Box 66360 Scotts Valley
California 95067-0360 / US
[N/P]
Former [1996/37]For all designated states
SEAGATE TECHNOLOGY, INC.
920 Disc Drive, P.O. Box 66360
Scotts Valley, California 95067-0360 / US
Inventor(s)01 / STAGEBERG, Frank, E.
6205 Peacedale Avenue
Edina, MN 55424 / US
02 / MILLER, Mark, S.
5820 Jeff Place
Edina, MN 55436 / US
03 / ASH, Kenneth, P.
7304 Laredo Drive
Chanhassen, MN 55317 / US
[1996/37]
Representative(s)Kenyon, Sarah Elizabeth, et al
Miller Sturt Kenyon
9 John Street
London
WC1N 2ES / GB
[N/P]
Former [1997/40]Kenyon, Sarah Elizabeth, et al
Orchard Kenyon & Co. Staple Inn Buildings North High Holborn
London WC1V 7PZ / GB
Former [1996/37]Sturt, Clifford Mark, et al
J. MILLER & CO. 34 Bedford Row, Holborn
London WC1R 4JH / GB
Application number, filing date94903341.923.11.1993
[1996/37]
WO1993US11571
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9514991
Date:01.06.1995
Language:EN
[1995/23]
Type: A1 Application with search report 
No.:EP0730774
Date:11.09.1996
Language:EN
The application published by WIPO in one of the EPO official languages on 01.06.1995 takes the place of the publication of the European patent application.
[1996/37]
Type: B1 Patent specification 
No.:EP0730774
Date:15.04.1998
Language:EN
[1998/16]
Search report(s)International search report - published on:EP01.06.1995
ClassificationIPC:G11B5/31
[1996/37]
CPC data not yet available
Designated contracting statesDE,   FR,   GB,   IT [1996/37]
TitleGerman:DÜNNFILMMAGNETKÖPFE MIT DÜNNEN NICKELUNTERLAGEN[1996/37]
English:THIN FILM MAGNETIC HEADS WITH THIN NICKEL UNDERLAYERS[1996/37]
French:TETES MAGNETIQUES A COUCHE MINCE COMPORTANT DES SOUS-COUCHES MINCES EN NICKEL[1996/37]
Entry into regional phase03.06.1996National basic fee paid 
03.06.1996Designation fee(s) paid 
03.06.1996Examination fee paid 
Examination procedure07.06.1995Request for preliminary examination filed
International Preliminary Examining Authority: EP
03.06.1996Examination requested  [1996/37]
08.11.1996Despatch of a communication from the examining division (Time limit: M04)
12.02.1997Reply to a communication from the examining division
02.07.1997Despatch of communication of intention to grant (Approval: Yes)
17.10.1997Communication of intention to grant the patent
16.01.1998Fee for grant paid
16.01.1998Fee for publishing/printing paid
Opposition(s)16.01.1999No opposition filed within time limit [1999/14]
Fees paidRenewal fee
03.06.1996Renewal fee patent year 03
02.12.1996Renewal fee patent year 04
27.10.1997Renewal fee patent year 05
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  TooltipFR15.04.1998
IT15.04.1998
[2006/14]
Former [1999/42]IT15.04.1998
FR11.09.1998
Former [1998/52]FR11.09.1998
Cited inInternational search[YA]EP0387143  (COMMISSARIAT À L'ENERGIE ATOMIQUE) [Y] 1,5,8 * column 1, line 7 - column 2, line 50 * * column 3, line 55 - column 4, line 8; figures 2C,5 * [A] 9,12;
 [A]EP0301823  (DIGITAL EQUIPMENT CORP.) [A] 1,5,8,12-14 * column 2, line 62 - column 3, line 25; figures 1A,2; claim 12 *;
 [A]EP0332320  (DIGITAL EQUIPMENT CORP.) [A] 1,2,5,8,10,12,13 * column 1, line 28 - line 39 * * column 4, line 4 - line 11; figures 4-6 *;
 [A]WO8905505  (DIGITAL EQUIPMENT CORP.) [A] 1,5,8,9,11-14 * page 3, line 24 - page 7, line 31; figures 2-6 *;
 [A]JPS5933613  ;
 [A]DE2833249  (SIEMENS AG);
 [A]EP0114076  (HITACHI LTD) [A] * page 7, line 21 - line 25 *;
 [A]WO8502706  (KÁRMÁN ET AL.) [A] * page 7, line 27 - line 30 *;
 [A]US4103315  (HEMPSTEAD ET AL.)
 [YA]  - "Laminated Seed Layers for Plated Thin Film Heads and Structures", IBM TECHNICAL DISCLOSURE BULLETIN, ARMONK, N. Y., US, (199206), vol. 35, no. 1B, pages 457 - 459 [Y] 1,5,8 * the whole document * [A] 2,9,11-14
 [A]  - PATENT ABSTRACTS OF JAPAN, (19840615), vol. 8, no. 129, Database accession no. (P - 280)<1566> , & JP59033613 A 19840223 (FUJITSU K. K.) [A] 1,3,5-8,12 * abstract *
 [A]  - Y. NAGAI ET AL., "Magnetic Anisotropy in Ni/Fe Artificial Lattice Film", JOURNAL OF APPLIED PHYSICS, WOODBURY, NY, US, (198808), vol. 64, no. 1, pages 1343 - 1346, XP000020305

DOI:   http://dx.doi.org/10.1063/1.341857
Examination   - EP-A- 0 114 076
    - EP-A- 0 301 823
    - EP-A- 0 332 320
    - EP-A- 0 387 143
    - WO-A-85/02706
    - WO-A-89/05505
    - DE-A- 2 833 249
    - US-A- 4 103 315
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.