Inventor · disambiguated record
Hisashi Umeki
Also filed as: UMEKI HISASHI
4 granted patents·4 pending applications·204 citations·filing 1997–2012
80Inventor score
Top patents by PatentIndex Score
8 records- 0186US6189032B1Client-server system for controlling access rights to certain services by a user of a client terminalHITACHI LTD·Filed 1998·Granted Feb 13, 2001·143 cites·17 claims
- 0271US9372995B2Vulnerability countermeasure device and vulnerability countermeasure methodSHIGEMOTO TOMOHIRO·Filed 2011·Granted Jun 21, 2016·7 cites·18 claims
- 0362US6512829B1Key distribution method and system in secure broadcast communicationHITACHI LTD·Filed 2000·Granted Jan 28, 2003·8 cites·28 claims
- 0462US6041408AKey distribution method and system in secure broadcast communicationHITACHI LTD·Filed 1997·Granted Mar 21, 2000·46 cites·42 claims
- 0545US2012272326A1Tokenization systemKAI SATOSHI·Filed 2012·Application pending·0 cites
- 0638US2002015491A1Public key encryption method and communication system using public key cryptosystemFiled 2001·Application pending·0 cites
- 0731US2013333045A1Security level visualization deviceSHIGEMOTO TOMOHIRO·Filed 2011·Application pending·0 cites
- 0829US2012210125A1Encrypted traffic test systemSHIGEMOTO TOMOHIRO·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →