Assignee
SAKAMURA KEN
13 granted patents·132 citations·filing 1987–2007
Top patents by PatentIndex Score
13 records- 0191US8306919B2IC card and authentication method in electronic ticket distribution systemSAKAMURA KEN·Filed 2007·Granted Nov 6, 2012·46 cites·2 claims
- 0276US8122261B2Data communication apparatus and data communication methodSAKAMURA KEN·Filed 2005·Granted Feb 21, 2012·7 cites·2 claims
- 0371US7580897B2IC card and authentication method in electronic ticket distribution systemSAKAMURA KEN·Filed 2003·Granted Aug 25, 2009·21 cites·4 claims
- 0469US7346718B2Autonomous integrated-circuit cardSAKAMURA KEN·Filed 2003·Granted Mar 18, 2008·14 cites·15 claims
- 0568US7416114B2Electronic value transfer device equipped with non-contact IC interfaceSAKAMURA KEN·Filed 2003·Granted Aug 26, 2008·1 cites·8 claims
- 0664US7357329B2IC card, terminal device, and data communication methodSAKAMURA KEN·Filed 2003·Granted Apr 15, 2008·11 cites·12 claims
- 0752US8468094B2Electronic value exchange system, mobile terminal, and electronic value exchange methodSAKAMURA KEN·Filed 2005·Granted Jun 18, 2013·0 cites·6 claims
- 0851US7340243B2Connection information management system for managing connection information used in communications between IC cardsSAKAMURA KEN·Filed 2003·Granted Mar 4, 2008·1 cites·7 claims
- 0942US8161499B2Data processing device and data processing methodSAKAMURA KEN·Filed 2005·Granted Apr 17, 2012·0 cites·5 claims
- 1039US4926321AMethod of searching a queue in response to a search instructionSAKAMURA KEN·Filed 1987·Granted May 15, 1990·9 cites·5 claims
- 1138US4941085AData processing system having apparatus for increasing the execution speed of bit field instructionsSAKAMURA KEN·Filed 1987·Granted Jul 10, 1990·9 cites·6 claims
- 1235US5210835AData processing system having apparatus for increasing the execution speed of bit field instructionsSAKAMURA KEN·Filed 1990·Granted May 11, 1993·8 cites·20 claims
- 1332US5398319AMicroprocessor having apparatus for dynamically controlling a kind of operation to be performed by instructions to be executedSAKAMURA KEN·Filed 1992·Granted Mar 14, 1995·5 cites·22 claims
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