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Extract from the Register of European Patents

EP About this file: EP2378706

EP2378706 - ZERO-KNOWLEDGE PROOF SYSTEM, ZERO-KNOWLEDGE PROOF DEVICE, ZERO-KNOWLEDGE VERIFICATION DEVICE, ZERO-KNOWLEDGE PROOF METHOD AND PROGRAM THEREFOR [Right-click to bookmark this link]
StatusThe application has been withdrawn
Status updated on  07.07.2017
Database last updated on 31.08.2024
Most recent event   Tooltip07.07.2017Withdrawal of applicationpublished on 09.08.2017  [2017/32]
Applicant(s)For all designated states
NEC Corporation
7-1, Shiba 5-chome Minato-ku
Tokyo 108-8001 / JP
[2011/42]
Former [2011/42]For all designated states
Nec Corporation
7-1 Shiba 5-chome Minato-ku
Tokyo 108-8001 / JP
Inventor(s)01 / TERANISHI Isamu
c/o NEC CORPORATION
7-1, Shiba 5-chome
Minato-ku
Tokyo 108-8001 / JP
 [2011/42]
Representative(s)Betten & Resch
Patent- und Rechtsanwälte PartGmbB
Maximiliansplatz 14
80333 München / DE
[N/P]
Former [2011/42]Betten & Resch
Patentanwälte Theatinerstrasse 8
80333 München / DE
Application number, filing date09831924.709.12.2009
WO2009JP70605
Priority number, dateJP2008031602211.12.2008         Original published format: JP 2008316022
[2011/42]
Filing languageJA
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2010067820
Date:17.06.2010
Language:JA
[2010/24]
Type: A1 Application with search report 
No.:EP2378706
Date:19.10.2011
Language:EN
[2011/42]
Search report(s)International search report - published on:JP17.06.2010
(Supplementary) European search report - dispatched on:EP29.05.2017
ClassificationIPC:H04L9/32, H04L9/30, H04W12/06, H04L29/08
[2017/26]
CPC:
H04L67/04 (EP,US); H04L9/3013 (EP,US); H04L9/3218 (EP,US);
H04L9/3236 (EP,US); H04W12/06 (EP,US); H04L2209/463 (EP,US);
H04L2209/80 (EP,US) (-)
Former IPC [2011/42]H04L9/32
Designated contracting statesAT,   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,   SE,   SI,   SK,   SM,   TR 
TitleGerman:NULL-KENNTNIS-BEWEISSYSTEM, NULL-KENNTNIS-BEWEISEINRICHTUNG, NULL-KENNTNIS-VERIFIKATIONSEINRICHTUNG, NULL-KENNTNIS-BEWEISVERFAHREN UND PROGRAMM DAFÜR[2011/42]
English:ZERO-KNOWLEDGE PROOF SYSTEM, ZERO-KNOWLEDGE PROOF DEVICE, ZERO-KNOWLEDGE VERIFICATION DEVICE, ZERO-KNOWLEDGE PROOF METHOD AND PROGRAM THEREFOR[2011/42]
French:SYSTÈME DE PREUVE À CONNAISSANCE NULLE, DISPOSITIF DE PREUVE À CONNAISSANCE NULLE, DISPOSITIF DE VÉRIFICATION À CONNAISSANCE NULLE, PROCÉDÉ DE PREUVE À CONNAISSANCE NULLE ET PROGRAMME ASSOCIÉ[2011/42]
Entry into regional phase31.05.2011Translation filed 
11.07.2011National basic fee paid 
11.07.2011Search fee paid 
11.07.2011Designation fee(s) paid 
11.07.2011Examination fee paid 
Examination procedure11.07.2011Examination requested  [2011/42]
03.07.2017Application withdrawn by applicant  [2017/32]
Fees paidRenewal fee
02.01.2012Renewal fee patent year 03
02.01.2013Renewal fee patent year 04
02.01.2014Renewal fee patent year 05
05.01.2015Renewal fee patent year 06
04.01.2016Renewal fee patent year 07
02.01.2017Renewal fee patent year 08
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Documents cited:Search[I]US2008301449  (TERANISHI ISAMU [JP]) [I] 1-9 * figure 1 * * paragraphs [0071] - [0102] *;
 [IA]US2004117630  (FURUKAWA JUN [JP]) [I] 6,9 * paragraphs [0007] - [0012] - [0041] * [A] 1-5,7,8;
 [A]US2008133912  (YAMAMOTO GO [JP], et al) [A] 1-9 * paragraphs [0139] , [0225] *
International search[A]WO2006077701  (NEC CORP [JP], et al);
 [A]WO2007007836  (NIPPON TELEGRAPH & TELEPHONE [JP], et al);
 [A]JP2003218858  (NIPPON TELEGRAPH & TELEPHONE);
 [A]JP2005252349  (JAPAN PROCESS DEV CO LTD)
by applicantJP2006077701
 JP2000067141
 JP2003218858
 JP2007503134
    - "Claus-Peter Schnorr. Efficient Signature Generation by Smart Cards", J. CRYPTOLOGY, (1991), vol. 4, no. 3, pages 161 - 174
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.