(19)
(11) EP 3 889 655 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
20.12.2023 Bulletin 2023/51

(45) Mention of the grant of the patent:
15.11.2023 Bulletin 2023/46

(21) Application number: 21164184.0

(22) Date of filing: 23.03.2021
(51) International Patent Classification (IPC): 
G02B 6/122(2006.01)
 G02B 6/30(2006.01)
(52) Cooperative Patent Classification (CPC):
G02B 6/1228; G02B 2006/12097; G02B 2006/1204; G02B 2006/12045; G02B 2006/12073; G02B 6/305; G02B 2006/12142

(54)

OPTICAL WAVEGUIDE DEVICE

LICHTWELLENLEITERVORRICHTUNG

DISPOSITIF DE GUIDE D'ONDE OPTIQUE

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 31.03.2020 JP 2020061811

(43) Date of publication of application:
06.10.2021 Bulletin 2021/40

(73) Proprietor: Sumitomo Osaka Cement Co., Ltd.
Tokyo, 105-8641 (JP)

(72) Inventors:
  • TAKANO, Shingo
    Tokyo, 102-8465 (JP)
  • KATAOKA, Yu
    Tokyo, 102-8465 (JP)
  • HIRATA, Shoutarou
    Tokyo, 102-8465 (JP)

(74) Representative: Staudt, Hans-Peter et al
Staudt IP Law
Donaustrasse 7 85049 Ingolstadt
Donaustrasse 7 85049 Ingolstadt (DE)


(56) References cited: : 
US-A1- 2009 231 680
US-A1- 2018 074 259
 US-A1- 2017 184 792
US-A1- 2018 180 818
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).