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Extract from the Register of European Patents

EP About this file: EP0342694

EP0342694 - Optical polarisation diversity receiver [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  02.02.1995
Database last updated on 02.09.2024
Most recent event   Tooltip17.04.2015Change - lapse in a contracting state
Updated state(s): FR
published on 20.05.2015  [2015/21]
Applicant(s)For all designated states
NEC Corporation
7-1, Shiba 5-chome Minato-ku
Tokyo 108-8001 / JP
[N/P]
Former [1989/47]For all designated states
NEC CORPORATION
7-1, Shiba 5-chome Minato-ku
Tokyo / JP
Inventor(s)01 / Shibutani, Makoto c/o NEC Corporation
33-1, Shiba 5-chome
Minato-ku Tokyo / JP
[1989/47]
Representative(s)Vossius & Partner Patentanwälte Rechtsanwälte mbB
Siebertstrasse 3
81675 München / DE
[N/P]
Former [1989/47]VOSSIUS & PARTNER
Postfach 86 07 67
D-81634 München / DE
Application number, filing date89109036.719.05.1989
[1989/47]
Priority number, dateJP1988012314320.05.1988         Original published format: JP 12314388
[1989/47]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0342694
Date:23.11.1989
Language:EN
[1989/47]
Type: A3 Search report 
No.:EP0342694
Date:04.03.1992
Language:EN
[1992/10]
Type: B1 Patent specification 
No.:EP0342694
Date:30.03.1994
Language:EN
[1994/13]
Search report(s)(Supplementary) European search report - dispatched on:EP16.01.1992
ClassificationIPC:H04B10/06
[1994/13]
CPC:
H04B10/61 (EP,US); H04B10/614 (EP,US); H04B10/64 (EP,US)
Former IPC [1989/47]H04B9/00
Designated contracting statesDE,   FR,   GB [1989/47]
TitleGerman:Optischer Polarisations-Diversitäts-Empfänger[1989/47]
English:Optical polarisation diversity receiver[1989/47]
French:Récepteur optique à diversité de polarisation[1989/47]
File destroyed:20.04.2002
Examination procedure14.06.1989Examination requested  [1989/47]
15.07.1993Despatch of communication of intention to grant (Approval: Yes)
20.09.1993Communication of intention to grant the patent
30.12.1993Fee for grant paid
30.12.1993Fee for publishing/printing paid
Opposition(s)31.12.1994No opposition filed within time limit [1995/12]
Fees paidRenewal fee
29.05.1991Renewal fee patent year 03
27.05.1992Renewal fee patent year 04
28.05.1993Renewal fee patent year 05
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Lapses during opposition  TooltipFR30.03.1994
[2015/21]
Former [1995/07]FR26.08.1994
Documents cited:Search[AD]  - OPTICAL FIBER COMMUNICATIONS CONFERENCE 1988 TECHNICAL DIGEST SERIES vol. 1, January 1988, NEW ORLEANS US ENNING ET AL: 'Polarization-diversity receiver for 560-Mbit/s ASK heterodyne detection' paper TU15
 [A]  - ELECTRONICS LETTERS. vol. 22, no. 1, 2 January 1986, STEVENAGE GB pages 9 - 11; DAVIS ET AL: 'Coherent Optical Receiver for 680 Mbit/s Using Phase Diversity'
 [A]  - 1986 OPTICAL FIBER COMMUNICATION CONFERENCE TECHNICAL DIGEST February 1986, ATLANTA US pages 56 - 58; PARK ET AL: 'Performance of ASK Heterodyne detection for various laser linewidths' paper TUL6
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.