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Extract from the Register of European Patents

EP About this file: EP0868718

EP0868718 - CERAMIC WAFERS AND THIN FILM MAGNETIC HEADS [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  03.11.2000
Database last updated on 16.07.2024
Most recent event   Tooltip25.07.2008Change - representativepublished on 27.08.2008  [2008/35]
Applicant(s)For all designated states
MINNESOTA MINING AND MANUFACTURING COMPANY
3M Center, P.O. Box 33427
St. Paul, MN 55133-3427 / US
[N/P]
Former [1998/41]For all designated states
MINNESOTA MINING AND MANUFACTURING COMPANY
3M Center, P.O. Box 33427
St. Paul, Minnesota 55133-3427 / US
Inventor(s)01 / CHIU, Raymond, C.
P.O. Box 33427
Saint Paul, MN 55133-3427 / US
02 / SMITH, Robert, G.
P.O. Box 33427
Saint Paul, MN 55133-3427 / US
03 / WEAVER, Billy, L.
P.O. Box 33427
Saint Paul, MN 55133-3427 / US
[1998/41]
Representative(s)Vossius & Partner Patentanwälte Rechtsanwälte mbB
Siebertstrasse 3
81675 München / DE
[N/P]
Former [2008/35]Vossius & Partner
Siebertstrasse 3
81675 München / DE
Former [1998/41]VOSSIUS & PARTNER
Siebertstrasse 4
81675 München / DE
Application number, filing date96936856.223.10.1996
[1998/41]
WO1996US16940
Priority number, dateUS1995057562720.12.1995         Original published format: US 575627
[1998/41]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9722967
Date:26.06.1997
Language:EN
[1997/27]
Type: A1 Application with search report 
No.:EP0868718
Date:07.10.1998
Language:EN
The application published by WIPO in one of the EPO official languages on 26.06.1997 takes the place of the publication of the European patent application.
[1998/41]
Type: B1 Patent specification 
No.:EP0868718
Date:05.01.2000
Language:EN
[2000/01]
Search report(s)International search report - published on:EP26.06.1997
ClassificationIPC:G11B5/60, G11B5/31
[1998/41]
CPC:
C04B41/009 (EP,US); C04B35/117 (EP,US); C04B41/5059 (EP,US);
C04B41/87 (EP,US); G11B5/31 (EP,US); H01F10/26 (EP,US);
C04B2111/00844 (EP,US); Y10T428/24355 (EP,US); Y10T428/24975 (EP,US);
Y10T428/263 (EP,US); Y10T428/265 (EP,US) (-)
C-Set:
C04B41/009, C04B35/10 (US,EP);
C04B41/009, C04B35/117 (US,EP);
C04B41/009, C04B35/48 (US,EP);
C04B41/5059, C04B41/4531 (EP,US)
Designated contracting statesDE,   ES,   FR,   GB,   IT [1998/41]
TitleGerman:KERAMISCHE WAFER UND DÜNNFILM-MAGNETKÖPFE[1998/41]
English:CERAMIC WAFERS AND THIN FILM MAGNETIC HEADS[1998/41]
French:PLAQUETTES EN CERAMIQUE ET TETES MAGNETIQUES A COUCHE MINCE[1998/41]
Entry into regional phase17.07.1998National basic fee paid 
17.07.1998Designation fee(s) paid 
17.07.1998Examination fee paid 
Examination procedure15.07.1997Request for preliminary examination filed
International Preliminary Examining Authority: EP
17.07.1998Examination requested  [1998/41]
15.12.1998Despatch of communication of intention to grant (Approval: No)
23.06.1999Despatch of communication of intention to grant (Approval: later approval)
08.07.1999Communication of intention to grant the patent
27.09.1999Fee for grant paid
27.09.1999Fee for publishing/printing paid
Opposition(s)06.10.2000No opposition filed within time limit [2000/51]
Fees paidRenewal fee
05.10.1998Renewal fee patent year 03
04.10.1999Renewal fee patent year 04
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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.
Cited inInternational search[A]JPH0438707  ;
 [A]JPH01201812  ;
 [A]JPS58211316  ;
 [YA]EP0137134  (HITACHI METALS LTD [JP]) [Y] 1-4,16-18,20 * page 5, line 16 - page 24, line 9; figure - * [A] 5-15,19;
 [A]EP0515786  (READ RITE CORP [US]) [A] 1-3,17,18* page 3, column 3, line 18 - page 4, column 5, line 53; figure - *;
 [YA]EP0582444  (CVD INC [US]) [Y] 1-4,16-18,20 * page 3, line 48 - page 10, line 46; figure - * [A] 5-15,19
 [A]  - PATENT ABSTRACTS OF JAPAN, (19920521), vol. 16, no. 216, Database accession no. (P - 1356), & JP04038707 A 19920207 (MATSUSHITA) [A] 1-3,17,18 * abstract *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19891113), vol. 13, no. 502, Database accession no. (P - 958), & JP01201812 A 19890814 (HITACHI) [A] 1-3,17,18 * abstract *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19840327), vol. 8, no. 65, Database accession no. (P - 263), & JP58211316 A 19831208 (MATSUSHITA) [A] 1-3,17,18 * abstract *
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.