Extract from the Register of European Patents

EP About this file: EP4245286

EP4245286 - ZIRCONIA DENTAL MILL BLANK, MANUFACTURING METHOD THEREFOR, METHOD FOR MANUFACTURING DENTAL ZIRCONIA CERAMIC PROSTHESIS, AND METHOD FOR MANUFACTURING ARTICLE COMPOSED OF ZIRCONIA COMPOSITE CERAMIC [Right-click to bookmark this link]
StatusThe patent has been granted
Status updated on  16.05.2025
Database last updated on 26.03.2026
FormerGrant of patent is intended
Status updated on  06.02.2025
FormerRequest for examination was made
Status updated on  18.08.2023
FormerThe international publication has been made
Status updated on  21.05.2022
Most recent event   Tooltip06.02.2026Lapse of the patent in a contracting state
New state(s): ES
published on 11.03.2026  [2026/11]
Applicant(s)For all designated states
Tokuyama Dental Corporation
38-9, Taito 1-chome Taito-ku
Tokyo 110-0016 / JP
[2023/38]
Inventor(s)01 / HARA, Hiroshi
Tokyo 110-0016 / JP
02 / HASHIMOTO, Akari
Tokyo 110-0016 / JP
03 / NAKASHIMA, Kei
Tokyo 110-0016 / JP
 [2023/38]
Representative(s)HGF
HGF Europe LLP
Neumarkter Straße 18
81673 München / DE
[2023/38]
Application number, filing date21891619.522.10.2021
[2023/38]
WO2021JP39055
Priority number, dateJP2020018876012.11.2020         Original published format: JP 2020188760
[2023/38]
Filing languageJA
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2022102372
Date:19.05.2022
Language:JA
[2022/20]
Type: A1 Application with search report 
No.:EP4245286
Date:20.09.2023
Language:EN
[2023/38]
Type: B1 Patent specification 
No.:EP4245286
Date:18.06.2025
Language:EN
[2025/25]
Search report(s)International search report - published on:JP19.05.2022
(Supplementary) European search report - dispatched on:EP13.09.2024
ClassificationIPC:C04B38/06, A61K6/818, A61C13/00, A61K6/822, A61K6/831, C04B35/488, C04B35/626
[2024/42]
CPC:
A61K6/818 (EP,US); A61C13/0006 (EP,US); A61C13/0022 (EP);
A61C13/083 (EP,US); A61K6/16 (EP); A61K6/822 (EP,US);
C04B35/4885 (EP); C04B35/6263 (EP); C04B35/64 (EP);
C04B38/067 (EP); C04B41/0072 (EP); C04B41/009 (EP);
C04B41/4535 (EP); C04B41/87 (EP); C04B2111/00836 (EP);
C04B2111/805 (EP); C04B2201/50 (EP); C04B2235/3225 (EP);
C04B2235/3246 (EP); C04B2235/3418 (EP); C04B2235/6026 (EP);
C04B2235/604 (EP); C04B2235/606 (EP); C04B2235/608 (EP);
C04B2235/616 (EP); C04B2235/661 (EP); C04B2235/762 (EP);
C04B2235/765 (EP); C04B2235/85 (EP); C04B2235/96 (EP);
C04B2235/9653 (EP) (-)
C-Set:
C04B38/067, C04B35/4885, C04B38/0054, C04B38/0067 (EP);
C04B41/009, C04B35/48, C04B38/00 (EP);
C04B41/4535, C04B41/5041 (EP);
C04B41/4535, C04B41/505 (EP);
C04B41/4535, C04B41/5089 (EP)
(-)
Former IPC [2023/38]A61K6/818, A61C13/00, A61K6/822, A61K6/831, C04B35/488
Designated contracting statesAL,   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 [2023/38]  
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:DENTALER ZIRKONOXIDFRÄSROHLING, HERSTELLUNGSVERFAHREN DAFÜR, VERFAHREN ZUR HERSTELLUNG EINER DENTALEN ZIRKONOXIDKERAMIKPROTHESE UND VERFAHREN ZUR HERSTELLUNG EINES ARTIKELS AUS ZIRKONOXIDVERBUNDKERAMIK[2023/38]
English:ZIRCONIA DENTAL MILL BLANK, MANUFACTURING METHOD THEREFOR, METHOD FOR MANUFACTURING DENTAL ZIRCONIA CERAMIC PROSTHESIS, AND METHOD FOR MANUFACTURING ARTICLE COMPOSED OF ZIRCONIA COMPOSITE CERAMIC[2023/38]
French:ÉBAUCHE DENTAIRE EN ZIRCONE, SON PROCÉDÉ DE FABRICATION, PROCÉDÉ DE FABRICATION D'UNE PROTHÈSE DENTAIRE CÉRAMIQUE EN ZIRCONE ET PROCÉDÉ DE FABRICATION D'UN ARTICLE COMPOSÉ DE CÉRAMIQUE COMPOSITE EN ZIRCONE[2023/38]
Entry into regional phase10.05.2023Translation filed 
10.05.2023National basic fee paid 
10.05.2023Search fee paid 
10.05.2023Designation fee(s) paid 
10.05.2023Examination fee paid 
Examination procedure10.05.2023Examination requested  [2023/38]
22.11.2024Date on which the examining division has become responsible
07.02.2025Communication of intention to grant the patent
12.05.2025Fee for grant paid
12.05.2025Fee for publishing/printing paid
12.05.2025Receipt of the translation of the claim(s)
Fees paidRenewal fee
10.05.2023Renewal fee patent year 03
16.08.2024Renewal fee patent year 04
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Lapses during opposition  TooltipCZ18.06.2025
ES18.06.2025
HR18.06.2025
PL18.06.2025
SK18.06.2025
SM18.06.2025
NO18.09.2025
RS18.09.2025
GR19.09.2025
IS18.10.2025
[2026/11]
Former [2026/10]CZ18.06.2025
HR18.06.2025
PL18.06.2025
SK18.06.2025
SM18.06.2025
NO18.09.2025
RS18.09.2025
GR19.09.2025
IS18.10.2025
Former [2026/09]CZ18.06.2025
HR18.06.2025
SM18.06.2025
NO18.09.2025
RS18.09.2025
GR19.09.2025
IS18.10.2025
Former [2026/08]HR18.06.2025
SM18.06.2025
NO18.09.2025
RS18.09.2025
GR19.09.2025
IS18.10.2025
Former [2026/07]HR18.06.2025
NO18.09.2025
RS18.09.2025
GR19.09.2025
IS18.10.2025
Former [2025/48]HR18.06.2025
NO18.09.2025
RS18.09.2025
GR19.09.2025
Former [2025/47]NO18.09.2025
GR19.09.2025
Documents cited:Search[A] US2020055779  (THEELKE BJORN et al.) [A] 1-9 * claims 1-20 *
International search[A] JP2007507250   [A] 1-9 * entire text *
 [A] JP2017530939  (スリーエム イノベイティブ プロパティズ カンパニー) [A] 1-9 * entire text *
 [A] JP2019108289  (KURARAY NORITAKE DENTAL INC et al.) [A] 1-9 * entire text *
 [A] JP2020079256  (STRAUMANN HOLDING AG et al.) [A] 1-9 * entire text *
 [A] JP2006280564  (FUKUOKA PREFECTURE et al.) [A] 1-9 * entire text *
 [A] JP2006500183   [A] 1-9 * entire text *
 [A] JP2019508349  (デンツプライ・シロナ・インコーポレイテッド et al.) [A] 1-9 * entire text *
 [A] JP2007534368   [A] 1-9 * entire text *
 [A] JP2015533754  (セラムテック ゲゼルシャフト ミット ベシュレンクテル ハフツングCeramTec GmbH) [A] 1-9 * entire text *
 [A] JP2016117618  (KURARAY NORITAKE DENTAL INC et al.) [A] 1-9 * entire text *
 [A] JP2011178610  (NORITAKE CO LTD et al.) [A] 1-9 * entire text *
by applicantJP6333254
 JPH0420318
 JP2007534368
   SEIJI BAN: "CAD/CAM Material Perfect Guide Book, Material Selection and Adhesion Operation Useful for Clinical Practice", 20 December 2017, ISHIYAKU PUBLISHERS, INC., pages: 18 - 20
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