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Extract from the Register of European Patents

EP About this file: EP3937175

EP3937175 - DRAM MEMORY [Right-click to bookmark this link]
StatusThe patent has been granted
Status updated on  05.01.2024
Database last updated on 07.10.2024
FormerGrant of patent is intended
Status updated on  28.08.2023
FormerExamination is in progress
Status updated on  13.01.2023
FormerRequest for examination was made
Status updated on  10.12.2021
FormerThe international publication has been made
Status updated on  03.04.2021
Most recent event   Tooltip08.08.2024Lapse of the patent in a contracting state
New state(s): SE		published on 11.09.2024  [2024/37]
Applicant(s)For all designated states
Changxin Memory Technologies, Inc.
Room 630 Haiheng Building
No. 6 Cuiwei Road
Economic and Technological Development Zone
Hefei
Anhui 230000 / CN
[2022/02]
Inventor(s)01 / JI, Kangling
Room 630, Haiheng Building No.6,
Cuiwei Road
Economic And Technological Development Zone
Hefei, Anhui 230000 / CN
02 / SHANG, Weibing
Room 630, Haiheng Building No.6,
Cuiwei Road
Economic And Technological Development Zone
Hefei, Anhui 230000 / CN
03 / LI, Hongwen
Room 630, Haiheng Building No.6,
Cuiwei Road
Economic And Technological Development Zone
Hefei, Anhui 230000 / CN
 [2024/06]
Former [2022/02]01 / JI, Kangling
Hefei, Anhui 230000 / CN
02 / SHANG, Weibing
Hefei, Anhui 230000 / CN
03 / LI, Hongwen
Hefei, Anhui 230000 / CN
Representative(s)V.O.
P.O. Box 87930
2508 DH Den Haag / NL
[2022/02]
Application number, filing date19946694.724.12.2019
[2022/02]
WO2019CN127862
Priority number, dateCN20191090449624.09.2019         Original published format: CN201910904496
[2022/02]
Filing languageZH
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2021056887
Date:01.04.2021
Language:ZH
[2021/13]
Type: A1 Application with search report 
No.:EP3937175
Date:12.01.2022
Language:EN
[2022/02]
Type: B1 Patent specification 
No.:EP3937175
Date:07.02.2024
Language:EN
[2024/06]
Search report(s)International search report - published on:CN01.04.2021
(Supplementary) European search report - dispatched on:EP21.04.2022
ClassificationIPC:G11C5/02, G11C5/06, G11C11/409, G11C11/407, // G11C7/18, G11C8/14, G11C11/408, G11C11/4097
[2022/19]
CPC:
G11C5/025 (EP); G11C11/403 (CN,US); G11C11/4087 (EP,US);
G11C11/4063 (CN); G11C5/063 (EP); G11C11/4097 (EP);
G11C7/18 (EP); G11C8/14 (EP) (-)
Former IPC [2022/02]G11C11/403, G11C11/4063
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 [2022/02]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:DRAM-SPEICHER[2022/02]
English:DRAM MEMORY[2022/02]
French:MÉMOIRE DRAM[2022/02]
Entry into regional phase04.10.2021Translation filed 
04.10.2021National basic fee paid 
04.10.2021Search fee paid 
04.10.2021Designation fee(s) paid 
04.10.2021Examination fee paid 
Examination procedure04.10.2021Examination requested  [2022/02]
19.10.2022Amendment by applicant (claims and/or description)
12.01.2023Despatch of a communication from the examining division (Time limit: M04)
12.04.2023Reply to a communication from the examining division
29.08.2023Communication of intention to grant the patent
11.12.2023Fee for grant paid
11.12.2023Fee for publishing/printing paid
11.12.2023Receipt of the translation of the claim(s)
Fees paidRenewal fee
04.10.2021Renewal fee patent year 03
21.11.2022Renewal fee patent year 04
28.12.2023Renewal fee patent year 05
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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  TooltipAT07.02.2024
BG07.02.2024
ES07.02.2024
FI07.02.2024
HR07.02.2024
LT07.02.2024
LV07.02.2024
NL07.02.2024
PL07.02.2024
SE07.02.2024
NO07.05.2024
RS07.05.2024
GR08.05.2024
IS07.06.2024
PT07.06.2024
[2024/37]
Former [2024/36]AT07.02.2024
BG07.02.2024
ES07.02.2024
FI07.02.2024
HR07.02.2024
LT07.02.2024
LV07.02.2024
NL07.02.2024
PL07.02.2024
NO07.05.2024
RS07.05.2024
GR08.05.2024
IS07.06.2024
PT07.06.2024
Former [2024/35]AT07.02.2024
BG07.02.2024
ES07.02.2024
FI07.02.2024
HR07.02.2024
LT07.02.2024
NL07.02.2024
NO07.05.2024
RS07.05.2024
GR08.05.2024
IS07.06.2024
Former [2024/34]BG07.02.2024
FI07.02.2024
HR07.02.2024
LT07.02.2024
NL07.02.2024
NO07.05.2024
RS07.05.2024
GR08.05.2024
IS07.06.2024
Former [2024/33]LT07.02.2024
NO07.05.2024
IS07.06.2024
Former [2024/32]IS07.06.2024
Documents cited:Search[A]US6081450  (NAWAKI MASARU [JP]) [A] 1-8* column 5, line 24 - column 8, line 29; figure 1 *;
 [XAI]US6448602  (SAKASHITA NARUMI [JP], et al) [X] 1-3 * column 3, line 23 - column 6, line 32; figures 1-5 * [A] 5,6 [I] 4,7,8;
 [IA]US2010142246  (OKAHIRO TETSUAKI [JP], et al) [I] 1-5,7,8 * paragraph [0016]; figure 1 * [A] 6
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.