Inventor
SAKO KAZUE
JP24 patents
⚠️ This page may combine multiple inventors who share the name “SAKO KAZUE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
15 patentsUS6595855B2Jul 22, 2003
Electronic lottery system and its operating method and computer-readable recording medium in which the electronic lottery program code is stored
NEC CORP55 citations96
US7181405B1Feb 20, 2007
Electronic tender system
NEC CORP21 citations92
US7117368B2Oct 3, 2006
Anonymous participation authority management system
NEC CORP26 citations92
US6169803B1Jan 2, 2001
Encryption key processing system to be incorporated into data recovery system or key setting system for generating encryption key
NEC CORP41 citations92
US5963649AOct 5, 1999
Message authorization system for authorizing message for electronic document
NEC CORP53 citations92
US7672460B2Mar 2, 2010
Mix-net system
NEC CORP10 citations84
US7003541B2Feb 21, 2006
Zero-knowledge proving system and method
NEC CORP15 citations84
US6754348B1Jun 22, 2004
System and method for determining winner
NEC CORP16 citations84
US6272225B1Aug 7, 2001
Key recovery condition encryption and decryption apparatuses
NEC CORP18 citations83
US11763383B2Sep 19, 2023
Cryptocurrency system, terminal, server, trading method of cryptocurrency, and program
NEC CORP3 citations73
US7080045B1Jul 18, 2006
Electronic revenue stamp issuing apparatus and method thereof and recording medium stored control program thereof
NEC CORP2 citations63
US7694880B2Apr 13, 2010
Anonymous electronic voting system and anonymous electronic voting method
NEC CORP4 citations62
US7376833B2May 20, 2008
Anonymous decryption system, anonymous decryption method, and program
NEC CORP5 citations62
US12079867B2Sep 3, 2024
Electronic transaction system, transaction server, verification server, method of transaction, and program
NEC CORP0 citations52
US11212112B2Dec 28, 2021
System, data management method, and program
NEC CORP0 citations52
NEC RESEARCH INST INC
3 patentsUS6092051AJul 18, 2000
Secure receipt-free electronic voting
NEC RESEARCH INST INC96 citations95
US5495532AFeb 27, 1996
Secure electronic voting using partially compatible homomorphisms
NEC RESEARCH INST INC96 citations94
US5682430AOct 28, 1997
Secure anonymous message transfer and voting scheme
NEC RESEARCH INST INC40 citations89