Extract from the Register of European Patents

EP About this file: EP4579837

EP4579837 - NONAQUEOUS ELECTROLYTE SECONDARY BATTERY [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  29.05.2025
Database last updated on 11.04.2026
FormerThe international publication has been made
Status updated on  01.03.2024
Most recent event   Tooltip13.03.2026Supplementary search reportpublished on 15.04.2026  [2026/16]
13.03.2026Change - classificationpublished on 15.04.2026  [2026/16]
13.03.2026Change - classificationpublished on 15.04.2026  [2026/16]
Applicant(s)For all designated states
Panasonic Intellectual Property Management Co., Ltd.
22-6, Moto-machi
Kadoma-shi, Osaka 571-0057 / JP
[2025/27]
Inventor(s)01 / TSUKASAKI, Takashi
Kadoma-shi, Osaka 571-0057 / JP
02 / IWAMOTO, Takuya
Kadoma-shi, Osaka 571-0057 / JP
03 / GOTO, Natsumi
Kadoma-shi, Osaka 571-0057 / JP
 [2025/27]
Representative(s)Eisenführ Speiser
Patentanwälte Rechtsanwälte PartGmbB
Gollierstraße 4
80339 München / DE
[2025/27]
Application number, filing date23857053.520.07.2023
[2025/27]
WO2023JP26630
Priority number, dateJP2022013541426.08.2022         Original published format: JP 2022135414
[2025/27]
Filing languageJA
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2024042937
Date:29.02.2024
Language:JA
[2024/09]
Type: A1 Application with search report 
No.:EP4579837
Date:02.07.2025
Language:EN
[2025/27]
Search report(s)International search report - published on:JP29.02.2024
(Supplementary) European search report - dispatched on:EP12.03.2026
ClassificationIPC:H01M10/052, H01M4/131, H01M4/133, H01M4/36, H01M4/587, H01M4/66, H01M4/48, H01M4/58, H01M50/107, H01M10/0525
[2026/16]
CPC:
H01M4/5825 (EP); H01M4/62 (US); H01M10/052 (US);
H01M10/0525 (EP); H01M4/131 (US); H01M4/362 (EP);
H01M4/366 (US); H01M4/48 (EP); H01M4/587 (US);
H01M50/107 (EP); H01M2004/028 (EP); Y02E60/10 (EP) (-)
Former IPC [2025/27]H01M10/052, H01M4/131, H01M4/133, H01M4/36, H01M4/587, H01M4/66
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 [2025/27]
TitleGerman:SEKUNDÄRBATTERIE MIT NICHTWÄSSRIGEM ELEKTROLYTEN[2025/27]
English:NONAQUEOUS ELECTROLYTE SECONDARY BATTERY[2025/27]
French:BATTERIE SECONDAIRE À ÉLECTROLYTE NON AQUEUX[2025/27]
Entry into regional phase18.02.2025Translation filed 
18.02.2025National basic fee paid 
18.02.2025Search fee paid 
18.02.2025Designation fee(s) paid 
18.02.2025Examination fee paid 
Examination procedure18.02.2025Amendment by applicant (claims and/or description)
18.02.2025Examination requested  [2025/27]
Fees paidRenewal fee
29.07.2025Renewal fee patent year 03
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Documents cited:Search[XY] WO2022070892  (PANASONIC IP MAN CO LTD et al.) [X] 1-12 * paragraphs [0011] - [0016]; example 1 *[Y] 13-16
 [Y] CN102610790  (宁德新能源科技有限公司) [Y] 13-16 * paragraphs [0007] , [ 0023] - [0026] *
   JESCHULL FABIAN ET AL: "Graphite Particle-Size Induced Morphological and Performance Changes of Graphite-Silicon Electrodes", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 18 June 2020 (2020-06-18), pages 100535 - 100549, XP093162427, Retrieved from the Internet [retrieved on 20260129], DOI: 10.1149/1945-7111/ab9b9a * Section Eperimental; pages 1, 2; figures 1, 3; table I *

DOI:   http://dx.doi.org/10.1149/1945-7111/ab9b9a
International search[A] JP2019169286  (TDK CORP et al.) [A] 1-16 * claims, examples 15, 16 *
 [A] CN102610790  (NINGDE AMPEREX TECHNOLOGY LTD et al.) [A] 1-16 * claims, examples *
 [A] JP2018006164  (UBE INDUSTRIES et al.) [A] 1-16 * claims, examples *
 [A] JP2013069684  (HITACHI CABLE et al.) [A] 1-16 * claims, paragraph [0035], example 2 *
by applicantJP2018006164
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