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Extract from the Register of European Patents

EP About this file: EP0902308

EP0902308 - Optical fiber grating and manufacturing method therefor [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  15.06.2007
Database last updated on 11.09.2024
Most recent event   Tooltip15.06.2007No opposition filed within time limitpublished on 18.07.2007  [2007/29]
Applicant(s)For all designated states
FUJIKURA LTD.
5-1 Kiba 1-chome
Kohtoh-ku
Tokyo / JP
[N/P]
Former [2006/32]For all designated states
FUJIKURA LTD.
5-1 Kiba 1-chome Kohtoh-ku
Tokyo / JP
Former [1999/11]For all designated states
FUJIKURA LTD.
5-1 Kiba 1-chome
Kohtoh-ku Tokyo / JP
Inventor(s)01 / Yamauchi, Ryozo
2-3-11, Miyamae
Sakura-shi, Chiba-ken / JP
02 / Wada, Akira
121-1-610, Tamachi
Sakura-shi, Chiba-ken / JP
03 / Sakai, Tetsuya
1-3-1-706, Miyanodai
Sakura-shi, Chiba-ken / JP
04 / Tanaka, Nobuyuki
C-605, Matsugaoka-ryo, 188-4, Jo
Sakura-shi, Chiba-ken / JP
05 / Shima, Kensuke
B-202 188-33 Jo., Sakura-shi
Chiba-ken / JP
06 / Nishide, Kenji
1602, 981-1, Kaburagi-cho
Sakura-shi, Chiba-ken / JP
07 / Yamasaki, Shigefumi
4-17-10, Miyanodai
Sakura-shi, Chiba-ken / JP
[1999/11]
Representative(s)Calderbank, Thomas Roger, et al
Mewburn Ellis LLP
City Tower
40 Basinghall Street
London EC2V 5DE / GB
[N/P]
Former [1999/11]Calderbank, Thomas Roger, et al
MEWBURN ELLIS York House 23 Kingsway
London WC2B 6HP / GB
Application number, filing date98304293.801.06.1998
[1999/11]
Priority number, dateJP1997024729211.09.1997         Original published format: JP 24729297
[1999/11]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP0902308
Date:17.03.1999
Language:EN
[1999/11]
Type: B1 Patent specification 
No.:EP0902308
Date:09.08.2006
Language:EN
[2006/32]
Search report(s)(Supplementary) European search report - dispatched on:EP05.01.1999
ClassificationIPC:G02B6/02, H04B10/00
[2006/10]
CPC:
G02B6/02147 (EP,US); G02B6/02095 (EP,US)
Former IPC [1999/11]G02B6/16, H04B10/00
Designated contracting statesDE,   FR,   GB,   IT [1999/48]
Former [1999/11]AT,  BE,  CH,  CY,  DE,  DK,  ES,  FI,  FR,  GB,  GR,  IE,  IT,  LI,  LU,  MC,  NL,  PT,  SE 
TitleGerman:Optisches Faser-Gitter und sein Herstellungsverfahren[1999/11]
English:Optical fiber grating and manufacturing method therefor[1999/11]
French:Réseau à fibre optique et procédé de sa fabrication[1999/11]
Examination procedure22.06.1998Examination requested  [1999/11]
16.01.2004Despatch of a communication from the examining division (Time limit: M06)
26.07.2004Reply to a communication from the examining division
20.09.2004Despatch of a communication from the examining division (Time limit: M06)
24.03.2005Reply to a communication from the examining division
26.04.2005Despatch of a communication from the examining division (Time limit: M02)
17.06.2005Reply to a communication from the examining division
23.12.2005Communication of intention to grant the patent
25.04.2006Fee for grant paid
25.04.2006Fee for publishing/printing paid
Opposition(s)10.05.2007No opposition filed within time limit [2007/29]
Fees paidRenewal fee
23.06.2000Renewal fee patent year 03
22.06.2001Renewal fee patent year 04
24.06.2002Renewal fee patent year 05
24.06.2003Renewal fee patent year 06
25.06.2004Renewal fee patent year 07
24.06.2005Renewal fee patent year 08
26.06.2006Renewal fee patent year 09
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Documents cited:Search[A]EP0572169  (AMERICAN TELEPHONE & TELEGRAPH [US]) [A] 1,7,11,12* the whole document *;
 [A]US5411566  (POOLE CRAIG D [US], et al) [A] 1,4-7,9,10 * the whole document *;
 [A]EP0736784  (NORTHERN TELECOM LTD [CA]) [A] 1,4-7,9,10 * figure - * * column 6, line 1 - line 53 * * column 5, line 1 - line 59 * * column 4, line 15 - line 59 * * column 1, line 3 - line 13 *;
 [XP]  - M.AKIYAMA ET.AL., "A novel long-period fiber grating using periodically released residual stress of pure-silica core fiber", OPTICAL FIBER COMMUNICATION CONFERENCE AND EXHIBIT 1998.OFC'98., TECHNICAL DIGEST, wASHINGTON, DC,USA, (19980222), vol. 2, pages 276 - 277, XP002087780 [XP] 1-5,7-9,11 * the whole document *
 [A]  - C.NARAYANAN ET.AL., "Band-rejection fiber filter using periodic core deformation", OPTICAL FIBER COMMUNICATION, (19960225), vol. 2, pages 267 - 269, XP002087781 [A] 1,4-7,9,10 * the whole document *
 [A]  - VENGSARKAR A M, "LONG-PERIOD FIBER GRATINGS SHAPE OPTICAL SPECTRA", LASER FOCUS WORLD, (199606), vol. 32, no. 6, pages 243 - 246, 248, XP002054623 [A] 1,4,7,9,11,12 * the whole document *
ExaminationUS5430817
    - YAMAUCHI R. ET AL, "Direct observation of drawing-induced anisotropic refractive-index change in quasifibers by a polarization preform analyzer", OSA TECHNICAL DIGEST SERIES, (1989), vol. 5, page THL03, XP009023488
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.