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Extract from the Register of European Patents

EP About this file: EP0399977

EP0399977 - Apparatus and method for detecting focus errors [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  08.01.1996
Database last updated on 05.10.2024
Most recent event   Tooltip07.03.1997Lapse of the patent in a contracting statepublished on 23.04.1997 [1997/17]
Applicant(s)For all designated states
International Business Machines Corporation
New Orchard Road
Armonk, NY 10504 / US
[N/P]
Former [1990/48]For all designated states
International Business Machines Corporation
Old Orchard Road
Armonk, N.Y. 10504 / US
Inventor(s)01 / Dewey, Anthony George
6613, Mt. Holly Drive
San Jose, CA 95120 / US
02 / Lenth, Wilfried
1870 - 43rd Avenue
Capitola, CA 95010 / US
03 / Rugar, Daniel
228 Webster Street, Apt. D.
Palo Alto, CA 94301 / US
[1990/48]
Representative(s)Burt, Roger James, et al
IBM United Kingdom Limited Intellectual Property Department Hursley Park Winchester
Hampshire SO21 2JN / GB
[N/P]
Former [1993/12]Burt, Roger James, Dr., et al
IBM United Kingdom Limited Intellectual Property Department Hursley Park
Winchester Hampshire SO21 2JN / GB
Former [1990/48]Johansson, Lars E.
IBM Svenska AB, SW Intellectual Property Dept.
S-163 92 Stockholm / SE
Application number, filing date90850192.721.05.1990
[1990/48]
Priority number, dateUS1989035756626.05.1989         Original published format: US 357566
[1990/48]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0399977
Date:28.11.1990
Language:EN
[1990/48]
Type: A3 Search report 
No.:EP0399977
Date:23.01.1991
Language:EN
[1991/04]
Type: B1 Patent specification 
No.:EP0399977
Date:15.02.1995
Language:EN
[1995/07]
Search report(s)(Supplementary) European search report - dispatched on:EP07.12.1990
ClassificationIPC:G11B7/09, G11B7/135
[1991/11]
CPC:
G11B7/0917 (EP,KR,US); G11B7/133 (EP,KR,US); G11B7/1359 (EP,KR,US);
G11B7/1381 (EP,KR,US)
Former IPC [1990/48]G11B7/09
Designated contracting statesDE,   FR,   GB [1990/48]
TitleGerman:Gerät und Verfahren zum Detektieren von Fokusfehlern[1990/48]
English:Apparatus and method for detecting focus errors[1990/48]
French:Appareil et procédé pour détecter des erreurs de focus[1990/48]
Examination procedure13.12.1990Examination requested  [1991/06]
23.09.1993Despatch of a communication from the examining division (Time limit: M06)
19.03.1994Reply to a communication from the examining division
25.04.1994Despatch of communication of intention to grant (Approval: Yes)
11.08.1994Communication of intention to grant the patent
22.08.1994Fee for grant paid
22.08.1994Fee for publishing/printing paid
Opposition(s)16.11.1995No opposition filed within time limit [1996/06]
Fees paidRenewal fee
21.05.1992Renewal fee patent year 03
19.05.1993Renewal fee patent year 04
19.05.1994Renewal fee patent year 05
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Documents cited:Search[A]EP0164687  (TOSHIBA KK [JP])
    [ ] - PATENT ABSTRACTS OF JAPAN, unexamined applications, P field, vol. 12, no. 298, August 15, 1988 THE PATENT OFFICE JAPANESE GOVERNMENT page 72 P 744 * JP - A - 63 - 70 936 ( ASAHI OPTICAL 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.