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Extract from the Register of European Patents

EP About this file: EP4439906

EP4439906 - MICROGRID CONTROL METHOD AND APPARATUS AND REGIONAL POWER SYSTEM [Right-click to bookmark this link]
StatusExamination is in progress
Status updated on  29.08.2025
Database last updated on 26.03.2026
FormerRequest for examination was made
Status updated on  30.08.2024
FormerThe international publication has been made
Status updated on  07.07.2023
Most recent event   Tooltip23.01.2026New entry: Application deemed to be withdrawn: despatch of communication + time limit 
Applicant(s)For all designated states
Beijing Etechwin Electric Co., Ltd.
No.8 Boxing 1st Road
Beijing Economic & Technological Development Zone
Daxing District
Beijing 100176 / CN
[2024/40]
Inventor(s)01 / ZHANG, Wei
Beijing 100176 / CN
02 / WEI, Dan
Beijing 100176 / CN
03 / ZHENG, Dehua
Beijing 100176 / CN
04 / ALEMU, Solomon Netsanet
Beijing 100176 / CN
05 / GOU, Fuhao
Beijing 100176 / CN
 [2024/40]
Representative(s)Hoffmann Eitle
Patent- und Rechtsanwälte PartmbB
Arabellastraße 30
81925 München / DE
[2024/40]
Application number, filing date22912985.311.03.2022
[2024/40]
WO2022CN80424
Priority number, dateCN20211165336330.12.2021         Original published format: CN202111653363
[2024/40]
Filing languageZH
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2023123679
Date:06.07.2023
Language:ZH
[2023/27]
Type: A1 Application with search report 
No.:EP4439906
Date:02.10.2024
Language:EN
[2024/40]
Search report(s)International search report - published on:CN06.07.2023
(Supplementary) European search report - dispatched on:EP14.02.2025
ClassificationIPC:H02J3/24, H02J3/28, H02J3/32, H02J3/38, H02J9/06
[2025/12]
CPC:
H02J3/28 (EP,CN); H02J3/0073 (CN); H02H3/165 (CN);
H02J3/00142 (EP,CN); H02J3/002 (CN); H02J3/30 (EP,CN);
H02J3/381 (EP); H02J3/388 (CN); H02J9/062 (EP,CN);
H02H3/00 (EP); H02J2101/24 (EP,CN); H02J2101/28 (EP,CN);
H02J2105/10 (EP); H02J2207/50 (CN); H02J3/32 (EP) (-)
Former IPC [2024/40]H02J3/24
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 [2024/40]
TitleGerman:MIKRONETZSTEUERUNGSVERFAHREN UND -VORRICHTUNG SOWIE REGIONALES STROMSYSTEM[2024/40]
English:MICROGRID CONTROL METHOD AND APPARATUS AND REGIONAL POWER SYSTEM[2024/40]
French:PROCÉDÉ ET APPAREIL DE COMMANDE DE MICRO-RÉSEAU ET SYSTÈME D'ALIMENTATION RÉGIONALE[2024/40]
Entry into regional phase27.06.2024Translation filed 
27.06.2024National basic fee paid 
27.06.2024Search fee paid 
27.06.2024Designation fee(s) paid 
27.06.2024Examination fee paid 
Examination procedure27.06.2024Examination requested  [2024/40]
23.05.2025Amendment by applicant (claims and/or description)
23.05.2025Date on which the examining division has become responsible
02.09.2025Despatch of a communication from the examining division (Time limit: M04)
21.01.2026Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time
Fees paidRenewal fee
27.06.2024Renewal fee patent year 03
25.02.2025Renewal fee patent year 04
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Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:Search[XIA] US2021218249  (DONG MINGXUAN et al.) [X] 1-5,10-13 * paragraphs [0004] - [0025] - [0043] - [0050] - [0057] - [0059]; figures 1-11 *[I] 8-9 [A] 6-7
 [A] US2014103727  (TAIMELA PASI et al.) [A] 1-13 * paragraphs [0002] - [0009] - [0032] , [0039] - [0042] - [0048] , [0049] , [0056] , [0081]; figures 1-15 *
 [A] US2019237968  (HIGGINSON MICHAEL JAMES et al.) [A] 1-13 * paragraphs [0002] - [0007]; figures 1,2 *
 [A] US2018090936  (GUO FENG et al.) [A] 1-13 * paragraphs [0002] , [0046] , [0057] - [0059]; figures 1-19 *
International search[X] CN111446725  (UNIV TAIYUAN TECHNOLOGY et al.) [X] 1-13 * description, paragraphs 29-45, and figures 1-13 *
 [A] CN110474354  (NARI GROUP CORP et al.) [A] 1-13 * entire document *
 [A] CN205283237  (DUNSHI MAGNETIC ENERGY TECH CO LTD et al.) [A] 1-13 * entire document *
 [A] CN110544938  (NARI RELAYS ELECTRIC CO LTD et al.) [A] 1-13 * entire document *
 [A] US2014375125  (YE YANZHU et al.) [A] 1-13 * entire document *
 [X]   (GUO, XIAOXIAO ET AL.): " (Frequency and Voltage Modulation Control Strategy for Hybrid Energy Storage Device in Wind Power Island Mode)", (POWER SYSTEM AND CLEAN ENERGY), vol. 35, no. 10, 31 October 2019 (2019-10-31), pages 96 - 102, XP093075776, ISSN: 1674-3814 [X] 1-13
 [X]   JIHON ZHANG, HE ZHIYONG, LI HUA, WU ZHENKUI, LI HANSHAN: "Droop Coordinated Control And Simulation Based on Islanded Microgrid of Dual Energy Storage", ACTA ENERGIAE SOLARIS SINICA, vol. 36, no. 1, 28 January 2015 (2015-01-28), pages 146 - 152, XP093075777 [X] 1-13
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.