blank Quick help
blank Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability

2022.02.11

More...
blank News flashes

Italy joins the Federated Register

Click here for more information on the Federated Register.

2025-06-12

More...
blank Related links

Release notes
European Patent Register Assistant
European Patent Register User Manual
European Patent Register – pocket guide
FAQ - European Patent Register
Federated Register (Flyer)
Global Dossier (Flyer)
Register events
Deep link coverage
Federated Register content
The Patent Information Tour
Fair use charter

Extract from the Register of European Patents

EP About this file: EP3780184

EP3780184 - NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, PRODUCTION METHOD FOR NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL SLURRY FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  02.05.2025
Database last updated on 24.03.2026
FormerThe patent has been granted
Status updated on  24.05.2024
FormerGrant of patent is intended
Status updated on  24.01.2024
FormerExamination is in progress
Status updated on  24.09.2021
FormerRequest for examination was made
Status updated on  15.01.2021
FormerThe international publication has been made
Status updated on  05.10.2019
Most recent event   Tooltip17.10.2025Lapse of the patent in a contracting state
New state(s): MC		published on 19.11.2025  [2025/47]
Applicant(s)For all designated states
Resonac Corporation
9-1, Higashi-Shimbashi 1-chome
Minato-ku
Tokyo 105-7325 / JP
[2024/13]
Former [2023/15]For all designated states
Resonac Corporation
13-9, Shiba Daimon 1-chome
Minato-ku
Tokyo 105-8518 / JP
Former [2021/23]For all designated states
Showa Denko Materials Co., Ltd.
9-2, Marunouchi 1-chome
Chiyoda-ku
Tokyo 100-6606 / JP
Former [2021/07]For all designated states
Hitachi Chemical Company, Ltd.
9-2, Marunouchi 1-chome
Chiyoda-ku
Tokyo 100-6606 / JP
Inventor(s)01 / TSUCHIYA, Hideyuki
Tokyo 105-8518 / JP
02 / KOMATSU, Naoya
Tokyo 105-8518 / JP
 [2023/16]
Former [2021/23]01 / TSUCHIYA, Hideyuki
c/o Showa Denko Materials Co., Ltd.,
9-2, Marunouchi 1-chome, Chiyoda-ku
Tokyo 100-6606 / JP
02 / KOMATSU, Naoya
c/o Showa Denko Materials Co., Ltd.,
9-2, Marunouchi 1-chome, Chiyoda-ku
Tokyo 100-6606 / JP
Former [2021/07]01 / TSUCHIYA, Hideyuki
c/o Hitachi Chemical Company, Ltd., 9-2,
Marunouchi 1-chome, Chiyoda-ku
Tokyo 100-6606 / JP
02 / KOMATSU, Naoya
c/o Hitachi Chemical Company, Ltd., 9-2,
Marunouchi 1-chome, Chiyoda-ku
Tokyo 100-6606 / JP
Representative(s)Berggren Oy
P.O. Box 16
Fabianinkatu 21
00101 Helsinki / FI
[N/P]
Former [2024/26]Berggren Oy
P.O. Box 16
Eteläinen Rautatiekatu 10A
00101 Helsinki / FI
Former [2021/07]Berggren Oy, Helsinki & Oulu
Isokatu 32
90100 Oulu / FI
Application number, filing date18912877.028.03.2018
[2021/07]
WO2018JP12982
Filing languageJA
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2019186828
Date:03.10.2019
Language:JA
[2019/40]
Type: A1 Application with search report 
No.:EP3780184
Date:17.02.2021
Language:EN
[2021/07]
Type: B1 Patent specification 
No.:EP3780184
Date:26.06.2024
Language:EN
[2024/26]
Search report(s)International search report - published on:JP03.10.2019
(Supplementary) European search report - dispatched on:EP16.09.2021
ClassificationIPC:H01M4/587, H01M4/48, H01M4/131, H01M4/133, H01M4/1391, H01M4/1393, H01M4/04, H01M4/36, H01M4/38, // H01M10/0525, H01M4/02, H01M4/62
[2024/07]
CPC:
H01M4/0471 (EP); H01M4/131 (EP); H01M4/133 (EP);
H01M4/1391 (EP); H01M4/1393 (EP); H01M4/364 (EP);
H01M4/386 (EP); H01M4/483 (EP); H01M4/587 (EP);
H01M10/0525 (EP); H01M2004/027 (EP); H01M2220/30 (EP);
H01M4/366 (EP); H01M4/625 (EP); Y02E60/10 (EP) (-)
Former IPC [2021/42]H01M4/587, H01M4/48, H01M4/131, H01M4/133, H01M4/1391, H01M4/1393, H01M4/04, H01M4/36, // H01M10/0525, H01M4/02, H01M4/62
Former IPC [2021/07]H01M4/587, H01M4/48
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 [2021/07]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:NEGATIVELEKTRODENMATERIAL FÜR LITHIUM-IONEN-SEKUNDÄRBATTERIE, VERFAHREN ZUR HERSTELLUNG DES NEGATIVELEKTRODENMATERIALS FÜR LITHIUM-IONEN-SEKUNDÄRBATTERIE, NEGATIVELEKTRODENMATERIALSCHLÄMME FÜR LITHIUM-IONEN-SEKUNDÄRBATTERIE, NEGATIVELEKTRODE FÜR LITHIUM-IONEN-SEKUNDÄBATTERIE UND LITHIUM-IONEN-SEKUNDÄRBATTERIE[2021/07]
English:NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, PRODUCTION METHOD FOR NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL SLURRY FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY[2021/07]
French:MATÉRIAU D'ÉLECTRODE NÉGATIVE SERVANT À UN ACCUMULATEUR AU LITHIUM-ION, PROCÉDÉ DE PRODUCTION DE MATÉRIAU D'ÉLECTRODE NÉGATIVE SERVANT À UN ACCUMULATEUR AU LITHIUM-ION, ÉLECTRODE NÉGATIVE DESTINÉE À UN ACCUMULATEUR AU LITHIUM-ION AU LITHIUM-ION ET ACCUMULATEUR AU LITHIUM-ION[2021/07]
Entry into regional phase26.10.2020Translation filed 
26.10.2020National basic fee paid 
26.10.2020Search fee paid 
26.10.2020Designation fee(s) paid 
26.10.2020Examination fee paid 
Examination procedure26.10.2020Examination requested  [2021/07]
28.09.2021Despatch of a communication from the examining division (Time limit: M04)
08.12.2021Reply to a communication from the examining division
25.08.2023Despatch of a communication from the examining division (Time limit: M04)
07.12.2023Reply to a communication from the examining division
25.01.2024Communication of intention to grant the patent
22.05.2024Fee for grant paid
22.05.2024Fee for publishing/printing paid
22.05.2024Receipt of the translation of the claim(s)
Opposition(s)27.03.2025No opposition filed within time limit [2025/23]
Fees paidRenewal fee
26.10.2020Renewal fee patent year 03
18.03.2021Renewal fee patent year 04
17.03.2022Renewal fee patent year 05
06.03.2023Renewal fee patent year 06
12.03.2024Renewal fee patent year 07
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court		 See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipAT26.06.2024
BG26.06.2024
CZ26.06.2024
DK26.06.2024
EE26.06.2024
ES26.06.2024
FI26.06.2024
HR26.06.2024
IT26.06.2024
LV26.06.2024
MC26.06.2024
NL26.06.2024
PL26.06.2024
RO26.06.2024
SE26.06.2024
SK26.06.2024
SM26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
IS26.10.2024
PT28.10.2024
[2025/47]
Former [2025/42]AT26.06.2024
BG26.06.2024
CZ26.06.2024
DK26.06.2024
EE26.06.2024
ES26.06.2024
FI26.06.2024
HR26.06.2024
IT26.06.2024
LV26.06.2024
NL26.06.2024
PL26.06.2024
RO26.06.2024
SE26.06.2024
SK26.06.2024
SM26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
IS26.10.2024
PT28.10.2024
Former [2025/21]AT26.06.2024
BG26.06.2024
CZ26.06.2024
DK26.06.2024
EE26.06.2024
ES26.06.2024
FI26.06.2024
HR26.06.2024
IT26.06.2024
LV26.06.2024
NL26.06.2024
PL26.06.2024
RO26.06.2024
SK26.06.2024
SM26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
IS26.10.2024
PT28.10.2024
Former [2025/11]AT26.06.2024
BG26.06.2024
CZ26.06.2024
EE26.06.2024
ES26.06.2024
FI26.06.2024
HR26.06.2024
IT26.06.2024
LV26.06.2024
NL26.06.2024
PL26.06.2024
RO26.06.2024
SK26.06.2024
SM26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
IS26.10.2024
PT28.10.2024
Former [2025/10]AT26.06.2024
BG26.06.2024
CZ26.06.2024
EE26.06.2024
ES26.06.2024
FI26.06.2024
HR26.06.2024
LV26.06.2024
NL26.06.2024
PL26.06.2024
RO26.06.2024
SK26.06.2024
SM26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
IS26.10.2024
PT28.10.2024
Former [2025/09]AT26.06.2024
BG26.06.2024
EE26.06.2024
FI26.06.2024
HR26.06.2024
LV26.06.2024
NL26.06.2024
PL26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
IS26.10.2024
PT28.10.2024
Former [2025/08]BG26.06.2024
FI26.06.2024
HR26.06.2024
LV26.06.2024
NL26.06.2024
PL26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
PT28.10.2024
Former [2025/03]BG26.06.2024
FI26.06.2024
HR26.06.2024
LV26.06.2024
NL26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
PT28.10.2024
Former [2024/52]BG26.06.2024
FI26.06.2024
HR26.06.2024
LV26.06.2024
NL26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
Former [2024/49]BG26.06.2024
FI26.06.2024
HR26.06.2024
LV26.06.2024
NO26.09.2024
RS26.09.2024
GR27.09.2024
Former [2024/47]BG26.06.2024
FI26.06.2024
HR26.06.2024
NO26.09.2024
GR27.09.2024
Former [2024/46]BG26.06.2024
FI26.06.2024
HR26.06.2024
NO26.09.2024
Documents cited:Search[XI] JP2015165510  (HITACHI CHEMICAL CO LTD et al.) [X] 1,2,10-13 * paragraph [0151] - paragraph [0154]; example 7 * * paragraph [0001] *[I] 3-9
 [XI] WO2017002959  (SHOWA DENKO KK et al.) [X] 1,2,10-13 * examples Ex. 2, Comp. Ex. 7 *[I] 3-9
 [XI] EP3319154  (SHOWA DENKO KK et al.) * paragraphs [0001] , [0144] , [0145] , [0170]; examples Ex. 2, Comp. Ex. 7 *[I] 3-9
International search[X] JP2014067583  (SANYO ELECTRIC CO et al.)
 [Y] JP2015170542  (SANYO ELECTRIC CO et al.)
 [X] JP2002083587  (HITACHI CHEMICAL CO LTD et al.) [X] 1-13 * , claim 1, paragraph [0031] (Family: none) *
 [Y] JP2009245613  (HITACHI CHEMICAL CO LTD et al.) [Y] 1-13 * , claim 1 (Family: none) *
 [Y] JP2005019399  (JFE CHEMICAL CORP et al.) [Y] 1-13 * , claim 1 *
 [Y] JP2014093145  (TOYOTA MOTOR CORP et al.) [Y] 1-13 * , claim 1 (Family: none) *
by applicantWO2012077785
   "Carbon Black for Rubber -basic characteristics- section IV: measurement of oil absorption amount", JIS K, 2008, pages 6217 - 4
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.