Inventor · disambiguated record
Keiichi Kurakazu
Also filed as: KURAKAZU KEIICHI
34 granted patents·6 pending applications·839 citations·filing 1986–2011
98Inventor score
Top patents by PatentIndex Score
40 records- 0191US6748507B2Single-chip microcomputer with integral clock generating unit providing clock signals to CPU, internal circuit modules and synchronously controlling external dynamic memoryHITACHI LTD·Filed 2002·Granted Jun 8, 2004·46 cites·3 claims
- 0289US5930523AMicrocomputer having multiple bus structure coupling CPU to other processing elementsHITACHI LTD·Filed 1998·Granted Jul 27, 1999·93 cites·7 claims
- 0385US6272620B1Central processing unit having instruction queue of 32-bit length fetching two instructions of 16-bit fixed length in one instruction fetch operationHITACHI LTD·Filed 2000·Granted Aug 7, 2001·22 cites·6 claims
- 0485US5682545AMicrocomputer having 16 bit fixed length instruction formatHITACHI LTD·Filed 1995·Granted Oct 28, 1997·64 cites·33 claims
- 0579US6591294B2Processing system with microcomputers each operable in master and slave modes using configurable bus access control terminals and bus use priority signalsHITACHI LTD·Filed 2001·Granted Jul 8, 2003·16 cites·10 claims
- 0678US5293586AData processing system for development of outline fontsHITACHI LTD·Filed 1992·Granted Mar 8, 1994·62 cites·21 claims
- 0774US5070473AMicroprocessorHITACHI LTD·Filed 1987·Granted Dec 3, 1991·54 cites·32 claims
- 0873US4825355AInstruction format for program control type data processing systemsHITACHI LTD·Filed 1986·Granted Apr 25, 1989·47 cites·8 claims
- 0972US5214786ARISC system performing calls and returns without saving or restoring window pointers and delaying saving until multi-register areas are filledHITACHI LTD·Filed 1987·Granted May 25, 1993·35 cites·34 claims
- 1069US6279063B1Microcomputer system with at least first and second microcomputers each operable in master and slave modes with configurable bus access control terminals and bus use priority controllerHITACHI LTD·Filed 1999·Granted Aug 21, 2001·32 cites·9 claims
- 1169US6223265B1Single-chip microcomputer synchronously controlling external synchronous memory responsive to memory clock signal and clock enable signalHITACHI LTD·Filed 1998·Granted Apr 24, 2001·31 cites·19 claims
- 1268US6343357B1Microcomputer and dividing circuitHITACHI LTD·Filed 2000·Granted Jan 29, 2002·6 cites·58 claims
- 1365US6996700B2Microcomputer and dividing circuitRENESAS TECH CORP·Filed 2001·Granted Feb 7, 2006·5 cites·5 claims
- 1465US5307502AData processing system having multiple register management for call and return operationsHITACHI LTD·Filed 1992·Granted Apr 26, 1994·32 cites·4 claims
- 1564US6735683B2Single-chip microcomputer with hierarchical internal bus structure having data and address signal lines coupling CPU with other processing elementsHITACHI LTD·Filed 2002·Granted May 11, 2004·9 cites·15 claims
- 1663US4897787AData processing systemHITACHI LTD·Filed 1987·Granted Jan 30, 1990·25 cites·27 claims
- 1762US6351788B1Data processor and data processing systemHITACHI LTD·Filed 1996·Granted Feb 26, 2002·50 cites·12 claims
- 1861US5517664ARISC system with instructions which include register area and displacement portions for accessing data stored in registers during processingHITACHI LTD·Filed 1995·Granted May 14, 1996·28 cites·24 claims
- 1959US5305460AData processorHITACHI LTD·Filed 1988·Granted Apr 19, 1994·26 cites·30 claims
- 2057US5969976ADivision circuit and the division method thereofHITACHI LTD·Filed 1997·Granted Oct 19, 1999·16 cites·37 claims
- 2156US6122724ACentral processing unit having instruction queue of 32-bit length fetching two instructions of 16-bit fixed length in one instruction fetch operationHITACHI LTD·Filed 1999·Granted Sep 19, 2000·15 cites·8 claims
- 2256US2008313444A1Microcomputer and dividing circuitKAWASAKI SHUMPEI·Filed 2008·Application pending·0 cites
- 2354US2008263228A1Single-chip microcomputerKAWASAKI SHUMPEI·Filed 2008·Application pending·0 cites
- 2454US2010191934A1Microcomputer and dividing circuitRENESAS TECH CORP·Filed 2010·Application pending·0 cites
- 2553US6212620B1Single-chip microcomputer operable in master and slave modes and having configurable bus control terminalsHITACHI LTD·Filed 1998·Granted Apr 3, 2001·15 cites·14 claims
- 2653US2012023281A1Single-chip microcomputerKAWASAKI SHUMPEI·Filed 2011·Application pending·0 cites
- 2752US4998197AData processor with fast break in program execution by selectively processing either external control signal or external interruptHITACHI LTD·Filed 1988·Granted Mar 5, 1991·15 cites·10 claims
- 2851US2005251651A1Microcomputer and dividing circuitKAWASAKI SHUMPEI·Filed 2005·Application pending·0 cites
- 2950US6253308B1Microcomputer having variable bit width area for displacement and circuit for handling immediate data larger than instruction wordHITACHI LTD·Filed 1998·Granted Jun 26, 2001·11 cites·37 claims
- 3050US4975593AMicrocomputer with synchronized data transferHITACHI LTD·Filed 1988·Granted Dec 4, 1990·19 cites·10 claims
- 3148US5991545AMicrocomputer having variable bit width area for displacement and circuit for handling immediate data larger than instruction wordHITACHI LTD·Filed 1995·Granted Nov 23, 1999·10 cites·21 claims
- 3247US2004199716A1Single-chip microcomputerFiled 2004·Application pending·0 cites
- 3344US6131154AMicrocomputer having variable bit width area for displacementHITACHI LTD·Filed 1997·Granted Oct 10, 2000·8 cites·7 claims
- 3442US5644703AData processor providing fast break in program executionHITACHI LTD·Filed 1995·Granted Jul 1, 1997·12 cites·3 claims
- 3537US5493659AData processor providing fast break in program executionHITACHI LTD·Filed 1990·Granted Feb 20, 1996·7 cites·27 claims
- 3636US5450610ARISC system capable of performing calls and returns without advancing or restoring window pointersHITACHI LTD·Filed 1994·Granted Sep 12, 1995·6 cites·3 claims
- 3736US5375211ABus error processing system having direct bus master/CPU communicationHITACHI LTD·Filed 1991·Granted Dec 20, 1994·8 cites·25 claims
- 3834US6205535B1Branch instruction having different field lengths for unconditional and conditional displacementsHITACHI LTD·Filed 1998·Granted Mar 20, 2001·6 cites·26 claims
- 3934US4954943AData processing systemHITACHI LTD·Filed 1989·Granted Sep 4, 1990·4 cites·16 claims
- 4032US5187782AData processing systemHITACHI LTD·Filed 1990·Granted Feb 16, 1993·4 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →