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Extract from the Register of European Patents

EP About this file: EP4258548

EP4258548 - OPERATIONAL AMPLIFIER, DRIVE CIRCUIT, INTERFACE CHIP, AND ELECTRONIC DEVICE [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  08.09.2023
Database last updated on 24.08.2024
FormerThe international publication has been made
Status updated on  09.07.2022
Most recent event   Tooltip02.08.2024Amendment by applicant 
Applicant(s)For all designated states
Huawei Technologies Co., Ltd.
Huawei Administration Building
Bantian
Longgang District
Shenzhen, Guangdong 518129 / CN
[2023/41]
Inventor(s)01 / WANG, Jingjing
Shenzhen, Guangdong 518129 / CN
02 / QIAN, Zhaohua
Shenzhen, Guangdong 518129 / CN
03 / ZHANG, Bingzhao
Shenzhen, Guangdong 518129 / CN
04 / WU, Chunbiao
Shenzhen, Guangdong 518129 / CN
05 / PENG, Jie
Shenzhen, Guangdong 518129 / CN
06 / KE, Jiandong
Shenzhen, Guangdong 518129 / CN
 [2023/41]
Representative(s)Pfenning, Meinig & Partner mbB
Patent- und Rechtsanwälte
Theresienhöhe 11a
80339 München / DE
[2023/41]
Application number, filing date20967539.630.12.2020
[2023/41]
WO2020CN141405
Filing languageZH
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2022141198
Date:07.07.2022
Language:ZH
[2022/27]
Type: A1 Application with search report 
No.:EP4258548
Date:11.10.2023
Language:EN
[2023/41]
Search report(s)International search report - published on:CN07.07.2022
(Supplementary) European search report - dispatched on:EP22.01.2024
ClassificationIPC:H03G3/20, H03F3/45, H03G1/00, H03G3/00, H03G3/30
[2024/08]
CPC:
H03F3/45237 (EP); H03F3/45475 (EP,US); H03F1/3211 (US);
H03F3/45183 (EP); H03F3/45224 (US); H03F3/4565 (EP);
H03G1/0029 (US); H03G1/0088 (EP); H03G3/001 (EP);
H03G3/3026 (EP); H03F2200/03 (EP); H03F2200/18 (EP);
H03F2200/252 (EP); H03F2200/513 (EP); H03F2200/552 (EP);
H03F2200/78 (EP); H03F2200/91 (EP); H03F2203/45008 (EP);
H03F2203/45031 (EP); H03F2203/45032 (EP); H03F2203/45036 (EP);
H03F2203/45072 (EP); H03F2203/45074 (EP); H03F2203/45082 (EP);
H03F2203/45088 (EP); H03F2203/45091 (EP); H03F2203/45134 (EP);
H03F2203/45136 (EP); H03F2203/45166 (EP); H03F2203/45171 (EP);
H03F2203/45202 (EP); H03F2203/45208 (EP); H03F2203/45224 (EP);
H03F2203/45352 (EP); H03F2203/45358 (EP); H03F2203/45361 (EP);
H03F2203/45371 (EP); H03F2203/45396 (EP); H03F2203/45418 (EP);
H03F2203/45424 (EP); H03F2203/45434 (EP); H03F2203/45471 (EP);
H03F2203/45481 (EP); H03F2203/45561 (EP); H03F2203/45574 (EP);
H03F2203/45616 (EP); H03F2203/45702 (EP) (-)
Former IPC [2023/41]H03G3/20
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 [2023/41]
TitleGerman:OPERATIONSVERSTÄRKER, TREIBERSCHALTUNG, SCHNITTSTELLENCHIP UND ELEKTRONISCHE VORRICHTUNG[2023/41]
English:OPERATIONAL AMPLIFIER, DRIVE CIRCUIT, INTERFACE CHIP, AND ELECTRONIC DEVICE[2023/41]
French:AMPLIFICATEUR OPÉRATIONNEL, CIRCUIT D'ATTAQUE, PUCE D'INTERFACE ET DISPOSITIF ÉLECTRONIQUE[2023/41]
Entry into regional phase07.07.2023Translation filed 
07.07.2023National basic fee paid 
07.07.2023Search fee paid 
07.07.2023Designation fee(s) paid 
07.07.2023Examination fee paid 
Examination procedure07.07.2023Examination requested  [2023/41]
31.07.2024Amendment by applicant (claims and/or description)
31.07.2024Date on which the examining division has become responsible
Fees paidRenewal fee
07.07.2023Renewal fee patent year 03
22.12.2023Renewal fee patent year 04
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Documents cited:Search[I]WO2007105282  (FUJITSU LTD [JP], et al) [I] 1-15 * paragraph [0018] - paragraph [0024]; figures 6-8 *;
 [A]CN201846315U  (UNIV SOUTHEAST) [A] 1-15 * paragraph [0022] - paragraph [0032]; figures 1, 2 *;
 [A]CN103166627B  (INST OF MICROELECTRONICS CAS) [A] 1-15* paragraph [0027] - paragraph [0032]; figures 1, 2 *
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.