Inventor · disambiguated record
Kiyohiko Ishikawa
Also filed as: ISHIKAWA KIYOHIKO
3 granted patents·2 pending applications·52 citations·filing 2005–2011
66Inventor score
Top patents by PatentIndex Score
5 records- 0189US8484470B2Authentication system, authentication device and recording mediumSAKAKIHARA HIRONORI·Filed 2010·Granted Jul 9, 2013·48 cites·10 claims
- 0272US7937407B2Access control method, access control system, metadata controlling device, and transmitting apparatusNEC CORP·Filed 2005·Granted May 3, 2011·4 cites·24 claims
- 0340US2010002876A1Encryption apparatus, decryption apparatus, licensing apparatus and content data generation methodKYOCERA CORP·Filed 2007·Application pending·0 cites
- 0434US2011208828A1Node apparatus and computer-readable storage medium for computer programFUJITSU LTD·Filed 2011·Application pending·0 cites
- 0530US8726356B2Authentication apparatus, authentication method, and authentication program implementing the methodKONYA YUKO·Filed 2008·Granted May 13, 2014·0 cites·8 claims
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