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Extract from the Register of European Patents

EP About this file: EP1947786

EP1947786 - Pre-emphasis method in an optical communication system [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  26.08.2016
Database last updated on 03.10.2024
Most recent event   Tooltip26.08.2016Application deemed to be withdrawnpublished on 28.09.2016  [2016/39]
Applicant(s)For all designated states
Fujitsu Limited
1-1, Kamikodanaka 4-chome Nakahara-ku
Kawasaki-shi, Kanagawa 211-8588 / JP
[2008/30]
Inventor(s)01 / Sakamoto, Takeshi
Fujitsu Limited
4-1-1, Kamikodanaka
Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
02 / Tomofuji, Hiroaki
Fujitsu Limited
4-1-1, Kamikodanaka
Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
03 / Onaka, Hiroshi
Fujitsu Limited
4-1-1, Kamikodanaka
Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
04 / Sekiya, Motoyoshi
Fujitsu Limited
4-1-1, Kamikodanaka
Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
05 / Yamane, Kazuo
Fujitsu Limited
4-1-1, Kamikodanaka
Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
06 / Terahara, Takafumi
Fujitsu Limited
4-1-1, Kamikodanaka
Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
07 / Murakami, Makato
Fujitsu Hokkaido Digital Technology
4-3-1, Nishi
Kita 7-jo
Kita-ku Sapporo-shi Hokkaido 060-0807 / JP
[N/P]
Former [2008/30]01 / Sakamoto, Takeshi
Fujitsu Limited 4-1-1, Kamikodanaka Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
02 / Tomofuji, Hiroaki
Fujitsu Limited 4-1-1, Kamikodanaka Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
03 / Onaka, Hiroshi
Fujitsu Limited 4-1-1, Kamikodanaka Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
04 / Sekiya, Motoyoshi
Fujitsu Limited 4-1-1, Kamikodanaka Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
05 / Yamane, Kazuo
Fujitsu Limited 4-1-1, Kamikodanaka Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
06 / Terahara, Takafumi
Fujitsu Limited 4-1-1, Kamikodanaka Nakahara-ku
Kawasaki-shi Kanagawa 211-8588 / JP
07 / Murakami, Makato
Fujitsu Hokkaido Digital Technology 4-3-1, Nishi Kita 7-jo
Kita-ku Sapporo-shi Hokkaido 606-0807 / JP
Representative(s)Hoffmann Eitle
Patent- und Rechtsanwälte PartmbB
Arabellastraße 30
81925 München / DE
[N/P]
Former [2008/30]HOFFMANN EITLE
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München / DE
Application number, filing date08006797.820.11.2000
[2008/30]
Priority number, dateJP2000000938718.01.2000         Original published format: JP 2000009387
[2008/30]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP1947786
Date:23.07.2008
Language:EN
[2008/30]
Type: A3 Search report 
No.:EP1947786
Date:30.07.2008
[2008/31]
Search report(s)(Supplementary) European search report - dispatched on:EP01.07.2008
ClassificationIPC:H04B10/079
[2015/49]
CPC:
H04B10/07953 (EP,US); H04B10/0799 (EP,US)
Former IPC [2008/30]H04B10/08, H04B10/17
Designated contracting statesDE,   FR,   GB [2008/30]
TitleGerman:Präemphase-Verfahren in einem optischen Kommunikationssystem[2008/30]
English:Pre-emphasis method in an optical communication system[2008/30]
French:Procédé de pré-emphase dans un système de communications optique[2008/30]
Examination procedure24.10.2008Amendment by applicant (claims and/or description)
27.11.2008Examination requested  [2009/02]
20.11.2015Communication of intention to grant the patent
31.03.2016Application deemed to be withdrawn, date of legal effect  [2016/39]
09.05.2016Despatch of communication that the application is deemed to be withdrawn, reason: fee for grant / fee for printing not paid in time  [2016/39]
Parent application(s)   TooltipEP00124366.6  / EP1130803
Divisional application(s)The date of the Examining Division's first communication in respect of the earliest application for which a communication has been issued (EP20000124366) is  05.07.2005
Fees paidRenewal fee
03.04.2008Renewal fee patent year 03
03.04.2008Renewal fee patent year 04
03.04.2008Renewal fee patent year 05
03.04.2008Renewal fee patent year 06
03.04.2008Renewal fee patent year 07
03.04.2008Renewal fee patent year 08
03.04.2008Renewal fee patent year 09
27.11.2009Renewal fee patent year 10
23.11.2010Renewal fee patent year 11
23.11.2011Renewal fee patent year 12
04.09.2012Renewal fee patent year 13
02.09.2013Renewal fee patent year 14
01.09.2014Renewal fee patent year 15
07.09.2015Renewal fee patent year 16
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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]EP0762677  (FUJITSU LTD [JP]) [A] 1-7 * abstract * * page 5, line 27 - page 8, line 54 * * figures 5,8-12B *;
 [A]FR2756693  (NEC CORP [JP]) [A] 1-7 * abstract * * page 4, line 13 - page 6, line 23 * * page 13, line 16 - page 15, line 6 *;
 [A]EP0897205  (FUJITSU LTD [JP]) [A] 1-7 * abstract * * paragraphs [0009] - [0021] - [0043] - [0053] - [0074] - [0077] * * figures 6,12 *;
 [A]  - MUYS W ET AL, "A 50-CHANNEL EXTERNALLY MODULATED AM-VSB VIDEO DISTRIBUTION SYSTEM WITH THREE CASCADED EDFA'S PROVIDING 50-DB POWER BUDGET OVER 30 KM OF STANDARD SINGLE-MODE FIBER", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE INC. NEW YORK, US, (19950601), vol. 7, no. 6, ISSN 1041-1135, pages 691 - 693, XP000510215 [A] 1-7 * the whole document *

DOI:   http://dx.doi.org/10.1109/68.388767
 [A]  - PETERMANN K., Laser diode modulation and noise, DORDRECHT, NL, KUWER ACADEMIC PUBLISHERS, (1988), XP002262380 [A] 1-7 * page 154 - page 157 *
 [A]  - TONGUZ O K ET AL, "GAIN EQUALIZATION OF EDFA CASCADES", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE. NEW YORK, US, (19971001), vol. 15, no. 10, ISSN 0733-8724, pages 1832 - 1841, XP000703598 [A] 1-7 * the whole document *

DOI:   http://dx.doi.org/10.1109/50.633567
 [A]  - DIMOPOULOS C ET AL, "Evolution of SNR during power transients in chains of saturated and gain equalised EDFAs", ELECTRONICS LETTERS, IEE STEVENAGE, GB, (19990930), vol. 35, no. 20, ISSN 0013-5194, pages 1756 - 1758, XP006012735 [A] 1-7 * the whole document *

DOI:   http://dx.doi.org/10.1049/el:19991159
by applicantFR2756693
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.