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Extract from the Register of European Patents

EP About this file: EP4198989

EP4198989 - OSCILLATION PERIOD MEASUREMENT CIRCUIT AND METHOD, AND SEMICONDUCTOR MEMORY [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  19.05.2023
Database last updated on 19.07.2024
FormerThe international publication has been made
Status updated on  03.03.2023
Most recent event   Tooltip16.04.2024Supplementary search reportpublished on 15.05.2024  [2024/20]
Applicant(s)For all designated states
Changxin Memory Technologies, Inc.
No. 388, Xingye Avenue
Airport Industrial Park
Economic and Technological Development Area
Hefei, Anhui 230000 / CN
[2023/25]
Inventor(s)01 / ZHANG, Zhiqiang
Hefei, Anhui 230000 / CN
 [2023/25]
Representative(s)Gulde & Partner
Patent- und Rechtsanwaltskanzlei mbB
Wallstraße 58/59
10179 Berlin / DE
[2023/25]
Application number, filing date21954782.503.11.2021
[2023/25]
WO2021CN128356
Priority number, dateCN20211099383627.08.2021         Original published format: CN202110993836
[2023/25]
Filing languageZH
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2023024262
Date:02.03.2023
Language:ZH
[2023/09]
Type: A1 Application with search report 
No.:EP4198989
Date:21.06.2023
Language:EN
[2023/25]
Search report(s)International search report - published on:CN02.03.2023
(Supplementary) European search report - dispatched on:EP15.04.2024
ClassificationIPC:H03K5/26, H03K5/19, // G01R23/10, G01R31/317
[2024/20]
CPC:
H03K5/19 (EP,KR); G01R31/31727 (EP,KR,US); H03K19/20 (US);
H03K3/037 (US); H03K5/26 (EP); G01R23/10 (EP)
Former IPC [2023/25]G11C29/50
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 [2023/25]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:SCHALTUNG UND VERFAHREN ZUR MESSUNG DER OSZILLATIONSPERIODE UND HALBLEITERSPEICHER[2023/25]
English:OSCILLATION PERIOD MEASUREMENT CIRCUIT AND METHOD, AND SEMICONDUCTOR MEMORY[2023/25]
French:CIRCUIT ET PROCÉDÉ DE MESURE DE PÉRIODE D'OSCILLATION, ET MÉMOIRE À SEMI-CONDUCTEURS[2023/25]
Entry into regional phase16.03.2023Translation filed 
16.03.2023National basic fee paid 
16.03.2023Search fee paid 
16.03.2023Designation fee(s) paid 
16.03.2023Examination fee paid 
Examination procedure16.03.2023Amendment by applicant (claims and/or description)
16.03.2023Examination requested  [2023/25]
Fees paidRenewal fee
24.11.2023Renewal fee patent year 03
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Documents cited:Search[XAI]US5487097  (HATAKENAKA MAKOTO [JP], et al);
 [A]US2018059159  (HSU CHIH CHENG [TW], et al)
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.