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Extract from the Register of European Patents

EP About this file: EP4313887

EP4313887 - METHOD AND SYSTEM FOR VERTICAL GRADIENT FREEZE 8 INCH GALLIUM ARSENIDE SUBSTRATES [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  05.01.2024
Database last updated on 15.06.2024
FormerThe international publication has been made
Status updated on  30.09.2022
Most recent event   Tooltip24.05.2024Change: Validation statespublished on 26.06.2024 [2024/26]
24.05.2024Change - extension statespublished on 26.06.2024 [2024/26]
Applicant(s)For all designated states
Axt, Inc.
4281 Technology Drive
Fremont, CA 94538 / US
[2024/06]
Inventor(s)01 / LIU, Weiguo
San Leandro, California 64577 / US
02 / SHETTY, Rajaram
Niskayuna, New York 12309 / US
03 / ZHANG, Wei
Fremont, California 94538 / US
 [2024/06]
Representative(s)Schmidt, Christian
ZSP Patentanwälte PartG mbB
Hansastraße 32
80686 München / DE
[2024/06]
Application number, filing date22776441.222.03.2022
[2024/06]
WO2022US21294
Priority number, dateUS202163164378P22.03.2021         Original published format: US 202163164378 P
[2024/06]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2022204106
Date:29.09.2022
Language:EN
[2022/39]
Type: A1 Application with search report 
No.:EP4313887
Date:07.02.2024
Language:EN
The application published by WIPO in one of the EPO official languages on 29.09.2022 takes the place of the publication of the European patent application.
[2024/06]
Search report(s)International search report - published on:US29.09.2022
ClassificationIPC:C03B11/08, C03B11/00, C03B29/06
[2024/06]
CPC:
C30B29/42 (EP,US); C30B11/002 (US); C30B11/003 (US);
C30B11/006 (EP,US); H01L21/02395 (US)
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 [2024/06]
TitleGerman:VERFAHREN UND SYSTEM FÜR 8 ZOLL GALLIUMARSENIDSUBSTRATE MIT VERTIKALEM GRADIENTEN-GEFRIERVERFAHREN UND -SYSTEM[2024/06]
English:METHOD AND SYSTEM FOR VERTICAL GRADIENT FREEZE 8 INCH GALLIUM ARSENIDE SUBSTRATES[2024/06]
French:PROCÉDÉ ET SYSTÈME POUR SUBSTRATS D'ARSÉNIURE DE GALLIUM DE 8 POUCES À CONGÉLATION À GRADIENT VERTICAL[2024/06]
Entry into regional phase19.09.2023National basic fee paid 
19.09.2023Search fee paid 
19.09.2023Designation fee(s) paid 
19.09.2023Examination fee paid 
Examination procedure19.09.2023Examination requested  [2024/06]
08.02.2024Amendment by applicant (claims and/or description)
Fees paidRenewal fee
21.03.2024Renewal fee patent year 03
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Cited inInternational search[Y]US2009249994  (LIU WEIGUO [US], et al) [Y] 1-30 * ; Figure 1; paragraph [0016]; Claim 1 *;
 [Y]US2019085482  (SHINDO ISAMU [JP]) [Y] 4,24* ; Figure 1; paragraphs [0139, 0208-0209] *;
 [Y]US2020190697  (SHETTY RAJARAM [US], et al) [Y] 1-30 * ; Entire document *
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.