(19)
(11) EP 3 339 484 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:
07.10.2020 Bulletin 2020/41

(45) Mention of the grant of the patent:
18.03.2020 Bulletin 2020/12

(21) Application number: 16837155.7

(22) Date of filing: 18.08.2016
(51) International Patent Classification (IPC): 
C30B 29/30(2006.01)
C30B 15/00(2006.01)
 C30B 15/10(2006.01)
(86) International application number:
PCT/JP2016/074113
(87) International publication number:
WO 2017/030166 (23.02.2017 Gazette 2017/08)

(54)

METHOD FOR PRODUCING LANGATATE SINGLE CRYSTAL AND LANGATATE SINGLE CRYSTAL

VERFAHREN ZUR HERSTELLUNG VON LANGATAT-EINKRISTALL UND LANGATAT-EINKRISTALL

PROCÉDÉ DE PRODUCTION D'UN MONOCRISTAL DE LANGATATE ET MONOCRISTAL DE LANGATATE

(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: 19.08.2015 JP 2015161709

(43) Date of publication of application:
27.06.2018 Bulletin 2018/26

(73) Proprietors:
  • Citizen Finedevice Co., Ltd.
    Fujikawaguchiko-machi Minamitsuru-gun, Yamanashi 401-0395 (JP)
  • CITIZEN WATCH CO., LTD.
    Tokyo 188-8511 (JP)

(72) Inventors:
  • TAKAHASHI, Ikuo
    Minamitsuru-gun Yamanashi 401-0395 (JP)
  • AOKI, Takayuki
    Minamitsuru-gun Yamanashi 401-0395 (JP)
  • NONOGAKI, Youichi
    Nishitokyo-shi Tokyo 188-8511 (JP)
  • KINOSHITA, Yoshitaka
    Nishitokyo-shi Tokyo 188-8511 (JP)

(74) Representative: Krauns, Christian 
Wallinger Ricker Schlotter Tostmann Patent- und Rechtsanwälte Partnerschaft mbB Zweibrückenstraße 5-7
80331 München
80331 München (DE)


(56) References cited: : 
EP-A1- 2 546 393
JP-A- H07 206 577
JP-A- 2010 143 782
 WO-A1-2011/111859
JP-A- 2007 131 470
JP-A- 2013 040 093
   
  • HIROMITSU KIMURA ET AL: "The effect of growth atmosphere and Ir contamination on electric properties of La3Ta0.5Ga5.5O14 single crystal grown by the floating zone and Czochralski method", JOURNAL OF ELECTROCERAMICS, vol. 20, no. 2, 30 October 2007 (2007-10-30), pages 73-80, XP055545373, US ISSN: 1385-3449, DOI: 10.1007/s10832-007-9349-2
  • SHUJUN ZHANG ET AL.: 'Characterization of high temperature piezoelectric crystals with an ordered langasite structure' JOURNAL OF APPLIED PHYSICS vol. 105, 2009, page 114107, XP012125565
  • RADOSLAW LISIECKI ET AL.: 'Effect of temperature on excited state relaxation dynamics and up- conversion phenomena in La3Ga5.5Ta0.5014:Er3+ single crystals' JOURNAL OF ALLOYS AND COMPOUNDS vol. 610, 15 October 2014, pages 451 - 455, XP028874501
   
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