Inventor · disambiguated record
Katsuhiro Shimohigashi
Also filed as: SHIMOHIGASHI KATSUHIRO
60 granted patents·2,578 citations·filing 1973–2003
99Inventor score
Top patents by PatentIndex Score
60 records- 0199US4661929ASemiconductor memory having multiple level storage structureHITACHI LTD·Filed 1984·Granted Apr 28, 1987·239 cites·28 claims
- 0297US5170374ASemiconductor memoryHITACHI LTD·Filed 1992·Granted Dec 8, 1992·329 cites·8 claims
- 0396US4992677AHigh speed MOSFET output buffer with low noiseHITACHI LTD·Filed 1989·Granted Feb 12, 1991·83 cites·9 claims
- 0496US4701884ASemiconductor memory for serial data accessHITACHI LTD·Filed 1986·Granted Oct 20, 1987·120 cites·26 claims
- 0596US4455495AProgrammable semiconductor integrated circuitry including a programming semiconductor elementHITACHI LTD·Filed 1980·Granted Jun 19, 1984·142 cites·37 claims
- 0695US5629898ADynamic memory device, a memory module, and a method of refreshing a dynamic memory deviceHITACHI LTD·Filed 1996·Granted May 13, 1997·142 cites·15 claims
- 0794US4811299ADynamic RAM device having a separate test mode capabilityHITACHI LTD·Filed 1987·Granted Mar 7, 1989·61 cites·20 claims
- 0893US5386135ASemiconductor CMOS memory device with separately biased wellsHITACHI LTD·Filed 1994·Granted Jan 31, 1995·83 cites·12 claims
- 0991US6740958B2Semiconductor memory deviceRENESAS TECH CORP·Filed 2002·Granted May 25, 2004·60 cites·27 claims
- 1090US5497023ASemiconductor memory device having separately biased wells for isolationHITACHI LTD·Filed 1994·Granted Mar 5, 1996·67 cites·15 claims
- 1189US5550781ASemiconductor apparatus with two activating modes of different number of selected word lines at refreshingHITACHI MAXELL·Filed 1995·Granted Aug 27, 1996·80 cites·12 claims
- 1288US4894696ADynamic random access memory having a trench capacitorHITACHI LTD·Filed 1986·Granted Jan 16, 1990·65 cites·30 claims
- 1388US4709350ASemiconductor memory using multiple level storage structureHITACHI LTD·Filed 1984·Granted Nov 24, 1987·44 cites·15 claims
- 1487US4992985AMethod for selectively initiating/terminating a test mode in an address multiplexed DRAM and address multiplexed DRAM having such a capabilityHITACHI LTD·Filed 1989·Granted Feb 12, 1991·34 cites·33 claims
- 1587US4805147AStacked static random access memory cell having capacitorHITACHI LTD·Filed 1986·Granted Feb 14, 1989·54 cites·20 claims
- 1687US4672586ASemiconductor memory having circuit effecting refresh on variable cyclesHITACHI LTD·Filed 1984·Granted Jun 9, 1987·39 cites·4 claims
- 1784US5132771ASemiconductor memory device having flip-flop circuitsHITACHI LTD·Filed 1990·Granted Jul 21, 1992·56 cites·23 claims
- 1884US5126974ASense amplifier for a memory deviceHITACHI LTD·Filed 1990·Granted Jun 30, 1992·59 cites·71 claims
- 1983US4930112ASemiconductor device having a voltage limiterHITACHI LTD·Filed 1986·Granted May 29, 1990·43 cites·27 claims
- 2083US4726021ASemiconductor memory having error correcting meansHITACHI LTD·Filed 1986·Granted Feb 16, 1988·71 cites·12 claims
- 2181US5324982ASemiconductor memory device having bipolar transistor and structure to avoid soft errorHITACHI LTD·Filed 1991·Granted Jun 28, 1994·36 cites·31 claims
- 2280US5021944ASemiconductor memory having redundancy circuit for relieving defectsHITACHI LTD·Filed 1989·Granted Jun 4, 1991·40 cites·16 claims
- 2379US5148255ASemiconductor memory deviceHITACHI LTD·Filed 1991·Granted Sep 15, 1992·45 cites·59 claims
- 2479US4656492AInsulated gate field effect transistorHITACHI LTD·Filed 1985·Granted Apr 7, 1987·37 cites·6 claims
- 2578US4747082ASemiconductor memory with automatic refresh meansHITACHI LTD·Filed 1987·Granted May 24, 1988·37 cites·11 claims
- 2678US4367540ADynamic memory with an interchangeable pair of data lines and sense amplifiersHITACHI LTD·Filed 1980·Granted Jan 4, 1983·26 cites·14 claims
- 2775US4472792ASemiconductor memoryHITACHI LTD·Filed 1982·Granted Sep 18, 1984·27 cites·19 claims
- 2875US4399519ADynamic monolithic memoryHITACHI LTD·Filed 1980·Granted Aug 16, 1983·23 cites·16 claims
- 2973US6208010B1Semiconductor memory deviceHITACHI LTD·Filed 1995·Granted Mar 27, 2001·25 cites·31 claims
- 3073US5430681AMemory cartridge and its memory control methodHITACHI MAXELL·Filed 1994·Granted Jul 4, 1995·30 cites·15 claims
- 3172US4873672ADynamic random access memory capable of fast erasing of storage dataHITACHI LTD·Filed 1987·Granted Oct 10, 1989·28 cites·15 claims
- 3272US4849801ASemiconductor memory device having increased capacitance for the storing nodes of the memory cellsHITACHI LTD·Filed 1987·Granted Jul 18, 1989·33 cites·2 claims
- 3368US5117393AMethod of testing memory cells in an address multiplexed dynamic ram including test mode selectionHITACHI LTD·Filed 1991·Granted May 26, 1992·19 cites·6 claims
- 3468US4901128ASemiconductor memoryHITACHI LTD·Filed 1986·Granted Feb 13, 1990·25 cites·21 claims
- 3568US4636985ASemiconductor memory having charge transfer device voltage amplifierHITACHI LTD·Filed 1984·Granted Jan 13, 1987·19 cites·33 claims
- 3667US5134581AHighly stable semiconductor memory with a small memory cell areaHITACHI LTD·Filed 1990·Granted Jul 28, 1992·26 cites·16 claims
- 3765US5047706AConstant current-constant voltage circuitHITACHI LTD·Filed 1990·Granted Sep 10, 1991·22 cites·4 claims
- 3864US5253197ASemiconductor associative memory device with current sensingHITACHI LTD·Filed 1990·Granted Oct 12, 1993·24 cites·13 claims
- 3959US6864559B2Semiconductor memory deviceRENESAS TECH CORP·Filed 2003·Granted Mar 8, 2005·7 cites·18 claims
- 4058US5237528ASemiconductor memoryHITACHI LTD·Filed 1992·Granted Aug 17, 1993·18 cites·9 claims
- 4156US5331596AAddress multiplexed dynamic RAM having a test mode capabilityHITACHI LTD·Filed 1992·Granted Jul 19, 1994·11 cites·33 claims
- 4255US5467314AMethod of testing an address multiplexed dynamic RAMHITACHI LTD·Filed 1994·Granted Nov 14, 1995·10 cites·2 claims
- 4354US4949145AHomo-junction bipolar transistor having high base concentration and suitable for low temperature operationHITACHI LTD·Filed 1988·Granted Aug 14, 1990·12 cites·7 claims
- 4453US5214496ASemiconductor memoryHITACHI LTD·Filed 1989·Granted May 25, 1993·13 cites·42 claims
- 4551US5381531AData processor for selective simultaneous execution of a delay slot instruction and a second subsequent instruction the pair following a conditional branch instructionHITACHI LTD·Filed 1991·Granted Jan 10, 1995·24 cites·9 claims
- 4651US4539658ASemiconductor memoryHITACHI LTD·Filed 1984·Granted Sep 3, 1985·9 cites·1 claims
- 4748US4646267ASemiconductor memoryHITACHI LTD·Filed 1986·Granted Feb 24, 1987·10 cites·19 claims
- 4848US4592022ASemiconductor memoryHITACHI LTD·Filed 1985·Granted May 27, 1986·10 cites·8 claims
- 4946US3931538ASignal detector for a semiconductor memory deviceHITACHI LTD·Filed 1973·Granted Jan 6, 1976·7 cites·13 claims
- 5044US5107141ABiCMOS logic circuit using 0.5 micron technology and having an operating potential difference of less than 4 voltsHITACHI LTD·Filed 1990·Granted Apr 21, 1992·7 cites·17 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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