Extract from the Register of European Patents

EP About this file: EP4207355

EP4207355 - POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY [Right-click to bookmark this link]
StatusThe patent has been granted
Status updated on  16.01.2026
Database last updated on 24.03.2026
FormerGrant of patent is intended
Status updated on  09.09.2025
FormerRequest for examination was made
Status updated on  02.06.2023
FormerThe international publication has been made
Status updated on  05.03.2022
Most recent event   Tooltip16.01.2026(Expected) grantpublished on 18.02.2026  [2026/08]
Applicant(s)For all designated states
Panasonic Energy Co., Ltd.
1-1, Matsushita-cho
Moriguchi-shi, Osaka 570-8511 / JP
[2025/52]
Former [2025/49]For all designated states
SANYO Electric Co., Ltd.
1006, Oaza Kadoma
Kadoma-shi, Osaka 571-8501 / JP
Former [2023/27]For all designated states
SANYO Electric Co., Ltd.
1-1, Sanyo-cho
Daito-shi
Osaka 574-8534 / JP
Inventor(s)01 / SAKITANI, Nobuhiro
Chuo-ku, Osaka-shi, Osaka 540-6207 / JP
02 / MORITA, Koki
Chuo-ku, Osaka-shi, Osaka 540-6207 / JP
03 / NOMURA, Shun
Chuo-ku, Osaka-shi, Osaka 540-6207 / JP
04 / FUJIMOTO, Hiroyuki
Chuo-ku, Osaka-shi, Osaka 540-6207 / JP
 [2023/27]
Representative(s)Novagraaf International SA
Chemin de l'Echo 3
1213 Onex, Geneva / CH
[2023/27]
Application number, filing date21861363.619.08.2021
[2023/27]
WO2021JP30301
Priority number, dateJP2020014404028.08.2020         Original published format: JP 2020144040
[2023/27]
Filing languageJA
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2022044935
Date:03.03.2022
Language:JA
[2022/09]
Type: A1 Application with search report 
No.:EP4207355
Date:05.07.2023
Language:EN
[2023/27]
Type: B1 Patent specification 
No.:EP4207355
Date:18.02.2026
Language:EN
[2026/08]
Search report(s)International search report - published on:JP03.03.2022
(Supplementary) European search report - dispatched on:EP10.10.2024
ClassificationIPC:H01M4/131, H01M4/36
[2023/27]
CPC:
H01M4/131 (EP); H01M4/364 (EP,US); H01M10/052 (EP);
H01M10/0525 (EP); H01M4/36 (EP); H01M4/485 (EP,US);
H01M4/505 (EP); H01M4/525 (EP); H01M2004/021 (EP,US);
H01M2004/028 (EP,US); Y02E60/10 (EP) (-)
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 [2023/27]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:POSITIVELEKTRODE FÜR SEKUNDÄRBATTERIEN MIT WASSERFREIEM ELEKTROLYT UND SEKUNDÄRBATTERIE MIT WASSERFREIEM ELEKTROLYT[2023/27]
English:POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY[2023/27]
French:ÉLECTRODE POSITIVE POUR BATTERIES SECONDAIRES À ÉLECTROLYTE NON AQUEUX, ET BATTERIE SECONDAIRE À ÉLECTROLYTE NON AQUEUX[2023/27]
Entry into regional phase13.02.2023Translation filed 
13.02.2023National basic fee paid 
13.02.2023Search fee paid 
13.02.2023Designation fee(s) paid 
13.02.2023Examination fee paid 
Examination procedure13.02.2023Amendment by applicant (claims and/or description)
13.02.2023Examination requested  [2023/27]
21.03.2025Date on which the examining division has become responsible
10.09.2025Communication of intention to grant the patent
09.01.2026Fee for grant paid
09.01.2026Fee for publishing/printing paid
09.01.2026Receipt of the translation of the claim(s)
Fees paidRenewal fee
18.08.2023Renewal fee patent year 03
29.08.2024Renewal fee patent year 04
29.08.2025Renewal fee patent year 05
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Documents cited:Search[A] US2020185712  (HIRATSUKA HIDEKAZU et al.) [A] 1-5 * examples 1,2 *
 [A] US2018026260  (HOSHINA KEIGO et al.) [A] 1-5 * examples 1-21 *
 [A] US2013147439  (TAKAHASHI HIDETOSHI et al.) [A] 1-5 * paragraphs [0105] - [0113]; figures 3A-3C *
 [A] JP4813450   [A] 1-5 * examples 1-3 *
International search[A] JP2013120736  (SONY CORP et al.) [A] 1-5 * claims, paragraphs [0027], [0177]-[0254], tables 1-2, fig. 3 *
 [A] WO2018150843  (PANASONIC IP MAN CO LTD et al.) [A] 1-5 * paragraphs [0041], [0045], fig. 3 *
 [P, X] WO2021153397  (PANASONIC IP MAN CO LTD et al.) [P, X] 1-5 * claims, paragraphs [0012]-[0023], fig. 1 *
by applicantJP2020053386
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