Extract from the Register of European Patents

EP About this file: EP4429014

EP4429014 - ELECTROLYTE LEAKAGE DETECTION UNIT USING INSULATION RESISTANCE, AND BATTERY MODULE COMPRISING SAME [Right-click to bookmark this link]
StatusGrant of patent is intended
Status updated on  09.02.2026
Database last updated on 24.03.2026
FormerRequest for examination was made
Status updated on  08.08.2024
FormerThe international publication has been made
Status updated on  13.04.2024
Most recent event   Tooltip09.02.2026New entry: Communication of intention to grant a patent 
Applicant(s)For all designated states
LG Energy Solution, Ltd.
Tower 1, 108, Yeoui-daero
Yeongdeungpo-gu
Seoul 07335 / KR
[2024/37]
Inventor(s)01 / OH, Kyu Hwan
Daejeon 34122 / KR
02 / LEE, Won Tae
Daejeon 34122 / KR
03 / HWANG, Sung Tack
Daejeon 34122 / KR
 [2024/37]
Representative(s)Plasseraud IP
104 Rue de Richelieu
CS92104
75080 Paris Cedex 02 / FR
[2024/37]
Application number, filing date23875163.027.09.2023
[2024/37]
WO2023KR14970
Priority number, dateKR2022012649604.10.2022         Original published format: KR 20220126496
[2024/37]
Filing languageKO
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2024076099
Date:11.04.2024
Language:KO
[2024/15]
Type: A1 Application with search report 
No.:EP4429014
Date:11.09.2024
Language:EN
[2024/37]
Search report(s)International search report - published on:KR11.04.2024
(Supplementary) European search report - dispatched on:EP04.07.2025
ClassificationIPC:H01M50/569, H01M50/502, H01M50/141, H01M50/211, H01M10/42, H01M10/48, H01M50/503
[2025/32]
CPC:
H01M50/503 (EP); H01M50/569 (EP,KR); H01M10/4228 (EP,US);
G01M3/16 (US); G01R31/1227 (US); H01M10/48 (EP);
H01M10/482 (US); H01M50/141 (KR); H01M50/211 (EP,KR,US);
H01M50/298 (US); H01M50/502 (KR); Y02E60/10 (EP) (-)
Former IPC [2024/37]H01M50/569, H01M50/502, H01M50/141, H01M50/211
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,   ME,   MK,   MT,   NL,   NO,   PL,   PT,   RO,   RS,   SE,   SI,   SK,   SM,   TR [2024/37]
TitleGerman:ELEKTROLYTLECKDETEKTIONSEINHEIT MIT ISOLATIONSWIDERSTAND UND BATTERIEMODUL DAMIT[2024/37]
English:ELECTROLYTE LEAKAGE DETECTION UNIT USING INSULATION RESISTANCE, AND BATTERY MODULE COMPRISING SAME[2024/37]
French:UNITÉ DE DÉTECTION DE FUITE D'ÉLECTROLYTE UTILISANT UNE RÉSISTANCE D'ISOLATION, ET MODULE DE BATTERIE LA COMPRENANT[2024/37]
Entry into regional phase07.06.2024Translation filed 
07.06.2024National basic fee paid 
07.06.2024Search fee paid 
07.06.2024Designation fee(s) paid 
07.06.2024Examination fee paid 
Examination procedure07.06.2024Examination requested  [2024/37]
12.09.2025Amendment by applicant (claims and/or description)
12.09.2025Date on which the examining division has become responsible
09.02.2026Communication of intention to grant the patent
Fees paidRenewal fee
24.09.2025Renewal fee patent year 03
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Documents cited:Search[DA] KR20210108269  (LG ENERGY SOLUTION LTD et al.) [DA] 1-13 * paragraph [0022] - paragraph [0051]; figures 1-6 *
 [A] JP2016001525  (NTT FACILITIES INC et al.) [A] 1-13 * paragraph [0009] - paragraph [0030]; figures 1,2,6,7,8 *
 [A] US2020067145  (YAMASHIMA MASAYUKI et al.) [A] 1-13 * paragraph [0012] - paragraph [0089]; figures 1-5; examples 1,2 *
 [A] EP3872889  (SAMSUNG SDI CO LTD et al.) [A] 1-13 * paragraph [0014] - paragraph [0058]; figures 1-3,8-10 *
 [PA] EP4224596  (LG ENERGY SOLUTION LTD et al.) [PA] 1-13 * paragraph [0024] - paragraph [0072]; figures 1-3 *
International search[A] KR102340898  (주식회사 엘지에너지솔루션) [A] 1-13 * See paragraphs [0031]-[0050] and figures 1-4. *
 [A] JP2019185861  (NISSAN MOTOR et al.) [A] 1-13 * See paragraphs [0032]-[0033] and figure 2. *
 [A] KR20210024917  (LG CHEMICAL LTD et al.) [A] 1-13 * See paragraphs [0038]-[0059] and figures 1-5. *
 [A] JP2002251985  (SONY CORP et al.) [A] 1-13 * See paragraphs [0028]-[0040] and figures 1-3. *
 [A] US2020067145  (YAMASHIMA MASAYUKI et al.) [A] 1-13 * See paragraphs [0045]-[0064] and figures 1-3. *
by applicantKR20220126496
 KR101383599
 KR20210108269
 CN111337201
 JP2014063663
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