Inventor · disambiguated record
Kenichi Takahira
Also filed as: TAKAHIRA KENICHI
26 granted patents·2,115 citations·filing 1987–2007
98Inventor score
Top patents by PatentIndex Score
26 records- 0198US5337063AAntenna circuit for non-contact IC card and method of manufacturing the sameMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Aug 9, 1994·412 cites·5 claims
- 0295US4930129AIC card having internal error checking capabilityMITSUBISHI ELECTRIC CORP·Filed 1988·Granted May 29, 1990·207 cites·9 claims
- 0393US5321240ANon-contact IC cardMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Jun 14, 1994·173 cites·4 claims
- 0493US5056089AMemory deviceMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Oct 8, 1991·155 cites·12 claims
- 0586US5664157ANoncontact IC card interface unit and communication system using the interface unitMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Sep 2, 1997·153 cites·16 claims
- 0686US5157247AIc cardMITSUBISHI ELECTRIC CORP·Filed 1990·Granted Oct 20, 1992·97 cites·8 claims
- 0785US4960982AIC card with secure mass storage memoryMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Oct 2, 1990·138 cites·9 claims
- 0884US5047924AMicrocomputerMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Sep 10, 1991·78 cites·2 claims
- 0983US5382778ANon-contact IC cardMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Jan 17, 1995·178 cites·6 claims
- 1078US5182442ALow power consumption non-contact integrated circuit cardMITSUBISHI ELECTRIC CORP·Filed 1990·Granted Jan 26, 1993·46 cites·4 claims
- 1176US5220158ANon-contact ic card and method of using the sameMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Jun 15, 1993·54 cites·6 claims
- 1275US4777355AIC card and system for checking the functionality thereofMITSUBISHI ELECTRIC CORP·Filed 1987·Granted Oct 11, 1988·68 cites·14 claims
- 1372US5952713ANon-contact type IC cardFiled 1995·Granted Sep 14, 1999·43 cites·2 claims
- 1467US5424527ASignal receiving coil and non-contact type IC card using the sameMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Jun 13, 1995·35 cites·5 claims
- 1566US8387113B2Communication system, authentication method, information processing device, information processing method, and batterySONY CORP·Filed 2007·Granted Feb 26, 2013·5 cites·11 claims
- 1661US5191192ANon-contact type information card and communication systemMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Mar 2, 1993·66 cites·12 claims
- 1758US4992651AIC card and method of recording data thereinMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Feb 12, 1991·24 cites·6 claims
- 1852US5019970AIC cardMITSUBISHI ELECTRIC CORP·Filed 1988·Granted May 28, 1991·18 cites·2 claims
- 1950US5898738AModulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC cardMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Apr 27, 1999·26 cites·8 claims
- 2050US5286962AIC card for prevention of fraudulent useMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Feb 15, 1994·20 cites·11 claims
- 2149US5367149AIC card and method of checking personal identification number of the sameMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Nov 22, 1994·20 cites·6 claims
- 2248US4924465AMemory with function test of error detection/correction deviceMITSUBISHI ELECTRIC CORP·Filed 1988·Granted May 8, 1990·15 cites·5 claims
- 2346US5036460AMicroprocessor having miswriting preventing functionMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Jul 30, 1991·42 cites·15 claims
- 2444US5016212AIC card having system ROM selection inhibitMITSUBISHI ELECTRIC CORP·Filed 1988·Granted May 14, 1991·13 cites·3 claims
- 2540US5671254AModulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC cardMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Sep 23, 1997·15 cites·2 claims
- 2639US4912308ADevice and method for effecting personal identification utilizing an IC cardMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Mar 27, 1990·14 cites·26 claims
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