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Extract from the Register of European Patents

EP About this file: EP0411131

EP0411131 - WAVELENGTH STABILIZED SOURCE OF LIGHT [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  05.11.1994
Database last updated on 12.07.2024
Most recent event   Tooltip05.11.1994No opposition filed within time limitpublished on 28.12.1994 [1994/52]
Applicant(s)For all designated states
FUJITSU LIMITED
1015, Kamikodanaka, Nakahara-ku Kawasaki-shi
Kanagawa 211 / JP
[N/P]
Former [1991/06]For all designated states
FUJITSU LIMITED
1015, Kamikodanaka, Nakahara-ku
Kawasaki-shi, Kanagawa 211 / JP
Inventor(s)01 / CHIBA, Kazuharu
6-28-36, Kitaterao Tsurumi-ku
Yokohama-shi Kanagawa 230 / JP
02 / NAKAJIMA, Yoshifumi
3-9-19-302, Miyamaedaira Miyamae-ku
Kawasaki-shi Kanagawa 211 / JP
03 / SUMIYOSHI, Hideo
1144-B-201, Kizuki Nakahara-ku
Kawasaki-shi Kanagawa 211 / JP
[1994/01]
Former [1991/06]01 / CHIBA, Kazuharu
6-18-36, Kitaterao Tsurumi-ku
Yokohama-shi Kanagawa 230 / JP
02 / NAKAJIMA, Yoshifumi
3-9-19-302, Miyamaedaira Miyamae-ku
Kawasaki-shi Kanagawa 211 / JP
03 / SUMIYOSHI, Hideo
1144-B-201, Kizuki Nakahara-ku
Kawasaki-shi Kanagawa 211 / JP
Representative(s)Lehn, Werner, et al
Hoffmann Eitle, Patent- und Rechtsanwälte, Postfach 81 04 20
81904 München / DE
[N/P]
Former [1991/06]Lehn, Werner, Dipl.-Ing., et al
Hoffmann, Eitle & Partner, Patentanwälte, Postfach 81 04 20
D-81904 München / DE
Application number, filing date89909859.401.09.1989
[1991/06]
WO1989JP00899
Priority number, dateJP1988022181605.09.1988         Original published format: JP 22181688
[1991/06]
Filing languageJA
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9003054
Date:22.03.1990
Language:EN
[1990/07]
Type: A1 Application with search report 
No.:EP0411131
Date:06.02.1991
Language:EN
The application published by WIPO in one of the EPO official languages on 22.03.1990 takes the place of the publication of the European patent application.
[1991/06]
Type: B1 Patent specification 
No.:EP0411131
Date:05.01.1994
Language:EN
[1994/01]
Search report(s)International search report - published on:JP22.03.1990
(Supplementary) European search report - dispatched on:EP31.08.1991
ClassificationIPC:H01S3/133
[1991/06]
CPC:
H04B10/503 (EP,US); H01S5/0687 (EP,US); H04B10/572 (EP,US);
G02F1/37 (EP,US)
Designated contracting statesDE,   FR,   GB [1991/06]
TitleGerman:LICHTQUELLE MIT STABILISIERTER WELLENLÄNGE[1994/01]
English:WAVELENGTH STABILIZED SOURCE OF LIGHT[1991/06]
French:SOURCE LUMINEUSE A LONGUEUR D'ONDE STABILISEE[1991/06]
Former [1991/06]LICHTSTRAHL MIT STABILISIERTER WELLENLÄNGE
Entry into regional phase04.05.1990Translation filed 
04.05.1990National basic fee paid 
04.05.1990Search fee paid 
04.05.1990Designation fee(s) paid 
04.05.1990Examination fee paid 
Examination procedure04.05.1990Examination requested  [1991/06]
08.12.1992Despatch of communication of intention to grant (Approval: Yes)
08.04.1993Communication of intention to grant the patent
05.07.1993Fee for grant paid
05.07.1993Fee for publishing/printing paid
Opposition(s)06.10.1994No opposition filed within time limit [1994/52]
Fees paidRenewal fee
27.09.1991Renewal fee patent year 03
30.09.1992Renewal fee patent year 04
30.09.1993Renewal fee patent year 05
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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.
Documents cited:Search[A]  - ELECTRONICS LETTERS, vol. 24, no. 1, 7th January 1988, pages 13-14; S. KOIZUMI et al.: "Frequency stabilisation of semiconductor laser using atomic absorption line under direct FSK"
International search[A]JPH06318820  (TDK CORP);
 [A]JPS62213186  (YOKOGAWA ELECTRIC CORP)
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.