Inventor · disambiguated record
Yoshio Sakai
Also filed as: MASUHARA TOSHIAKI · SAKAI YOSHIO · SASAKI YOSHIO · TERUNUMA MUTSUHIRO
113 granted patents·14 pending applications·2,855 citations·filing 1975–2024
99Inventor score
Top patents by PatentIndex Score
127 records- 0197US5042620AElevator control systemHITACHI LTD·Filed 1989·Granted Aug 27, 1991·143 cites·14 claims
- 0297US4768076ARecrystallized CMOS with different crystal planesHITACHI LTD·Filed 1985·Granted Aug 30, 1988·174 cites·12 claims
- 0396US4995479ADisplay guide apparatus of elevator and its display methodHITACHI LTD·Filed 1989·Granted Feb 26, 1991·144 cites·24 claims
- 0496US4455495AProgrammable semiconductor integrated circuitry including a programming semiconductor elementHITACHI LTD·Filed 1980·Granted Jun 19, 1984·142 cites·37 claims
- 0595US5258586AElevator control system with image pickups in hall waiting areas and elevator carsHITACHI LTD·Filed 1990·Granted Nov 2, 1993·88 cites·26 claims
- 0694US7684057B2Linear measurement apparatusTANITA SEISAKUSHO KK·Filed 2007·Granted Mar 23, 2010·32 cites·28 claims
- 0794US4970564ASemiconductor memory device having stacked capacitor cellsHITACHI LTD·Filed 1988·Granted Nov 13, 1990·99 cites·26 claims
- 0893US5892190AMethod and system of controlling elevators and method and apparatus of inputting requests to the control systemHITACHI LTD·Filed 1993·Granted Apr 6, 1999·49 cites·51 claims
- 0993US5307903AMethod and system of controlling elevators and method and apparatus of inputting requests to the control systemHITACHI LTD·Filed 1989·Granted May 3, 1994·54 cites·70 claims
- 1092US5194749ASemiconductor integrated circuit deviceHITACHI LTD·Filed 1992·Granted Mar 16, 1993·74 cites·37 claims
- 1191US5140389ASemiconductor memory device having stacked capacitor cellsHITACHI LTD·Filed 1990·Granted Aug 18, 1992·74 cites·23 claims
- 1291US4907058AComplementary semiconductor device having a double wellHITACHI LTD·Filed 1988·Granted Mar 6, 1990·71 cites·30 claims
- 1390US7277606B1Optical switch deviceFUJITSU LTD·Filed 2006·Granted Oct 2, 2007·23 cites·10 claims
- 1490US5483083ASemiconductor integrated circuit deviceHITACHI LTD·Filed 1993·Granted Jan 9, 1996·60 cites·17 claims
- 1590US5182776AImage processing apparatus having apparatus for correcting the image processingHITACHI LTD·Filed 1991·Granted Jan 26, 1993·52 cites·28 claims
- 1689US7920791B2Passive optical network system and method of data transmission in the passive optical networkFUJITSU LTD·Filed 2008·Granted Apr 5, 2011·13 cites·7 claims
- 1789US7440649B2Wavelength selective switch moduleFUJITSU LTD·Filed 2007·Granted Oct 21, 2008·16 cites·8 claims
- 1888US4355374ASemiconductor memory deviceHITACHI LTD·Filed 1980·Granted Oct 19, 1982·45 cites·8 claims
- 1987US4805147AStacked static random access memory cell having capacitorHITACHI LTD·Filed 1986·Granted Feb 14, 1989·54 cites·20 claims
- 2086US9450680B2Optical communication system, optical transmitter, and optical receiverFUJITSU OPTICAL COMPONENTS LTD·Filed 2014·Granted Sep 20, 2016·7 cites·9 claims
- 2186US4853894AStatic random-access memory having multilevel conductive layerHITACHI LTD·Filed 1987·Granted Aug 1, 1989·58 cites·24 claims
- 2285US4429215APlanar heat generatorTOTOKU ELECTRIC·Filed 1982·Granted Jan 31, 1984·42 cites·4 claims
- 2384US5132771ASemiconductor memory device having flip-flop circuitsHITACHI LTD·Filed 1990·Granted Jul 21, 1992·56 cites·23 claims
- 2484US4982815AElevator apparatusHITACHI LTD·Filed 1989·Granted Jan 8, 1991·29 cites·11 claims
- 2582US8554982B2Storage device and information processing systemNISHIHARA TOSHIYUKI·Filed 2005·Granted Oct 8, 2013·10 cites·23 claims
- 2682US4492974ADMOS With gate protection diode formed over base regionHITACHI LTD·Filed 1982·Granted Jan 8, 1985·36 cites·15 claims
- 2781US5025896AElevator control apparatusHITACHI LTD·Filed 1989·Granted Jun 25, 1991·35 cites·34 claims
- 2880US5389749AElevator systemHITACHI LTD·Filed 1992·Granted Feb 14, 1995·51 cites·11 claims
- 2979US7385863B2Semiconductor memory deviceSONY CORP·Filed 2007·Granted Jun 10, 2008·10 cites·9 claims
- 3079US4785342AStatic random access memory having structure of first-, second- and third-level conductive filmsHITACHI LTD·Filed 1987·Granted Nov 15, 1988·38 cites·22 claims
- 3178US5376104ADefibrillator with electrocardiogram monitorNIHON KOHDEN CORP·Filed 1993·Granted Dec 27, 1994·188 cites·4 claims
- 3275US7594896B2Waist circumference calculation apparatus and body composition determination apparatusTANITA SEISAKUSHO KK·Filed 2007·Granted Sep 29, 2009·13 cites·16 claims
- 3375US5034797ASemiconductor memory devices having stacked polycrystalline silicon transistorsHITACHI LTD·Filed 1990·Granted Jul 23, 1991·40 cites·31 claims
- 3474US4261004ASemiconductor deviceHITACHI LTD·Filed 1978·Granted Apr 7, 1981·19 cites·29 claims
- 3573US10234758B2Liquid solder resist composition and covered-printed wiring boardGOO CHEMICAL CO LTD·Filed 2014·Granted Mar 19, 2019·2 cites·10 claims
- 3673US9512490B2Detection of digestive organ cancer, gastric cancer, colorectal cancer, pancreatic cancer, and biliary tract cancer by gene expression profilingNAT UNIV CORP KANAZAWA UNIV·Filed 2014·Granted Dec 6, 2016·0 cites·5 claims
- 3773US9512491B2Detection of digestive organ cancer, gastric cancer, colorectal cancer, pancreatic cancer, and biliary tract cancer by gene expression profilingNAT UNIV CORP KANAZAWA UNIV·Filed 2014·Granted Dec 6, 2016·0 cites·5 claims
- 3873US7596453B2Digital scaleTANITA SEISAKUSHO KK·Filed 2007·Granted Sep 29, 2009·8 cites·4 claims
- 3972US10317796B2Solder resist composition and covered printed wiring boardGOO CHEMICAL CO LTD·Filed 2014·Granted Jun 11, 2019·2 cites·6 claims
- 4072US9441276B2Detection of digestive organ cancer, gastric cancer, colorectal cancer, pancreatic cancer, and biliary tract cancer by gene expression profilingNAT UNIV CORP KANAZAWA UNIV·Filed 2014·Granted Sep 13, 2016·0 cites·5 claims
- 4172US4849801ASemiconductor memory device having increased capacitance for the storing nodes of the memory cellsHITACHI LTD·Filed 1987·Granted Jul 18, 1989·33 cites·2 claims
- 4272US4609835ASemiconductor integrated circuitHITACHI LTD·Filed 1983·Granted Sep 2, 1986·23 cites·17 claims
- 4372US4574186AHeating sheetTOTOKU ELECTRIC·Filed 1983·Granted Mar 4, 1986·24 cites·2 claims
- 4471US9119566B2Present-on-bed determination apparatus and sleep measurement apparatusTANITA SEISAKUSHO KK·Filed 2012·Granted Sep 1, 2015·8 cites·26 claims
- 4570US7248514B2Semiconductor memory deviceSONY CORP·Filed 2004·Granted Jul 24, 2007·15 cites·7 claims
- 4668US9130680B2Optical transmitter and modulated optical signal generating methodFUJITSU LTD·Filed 2013·Granted Sep 8, 2015·2 cites·15 claims
- 4768US8331402B2Optical transmission device, scrambling method, and descrambling methodSAKAI YOSHIO·Filed 2008·Granted Dec 11, 2012·3 cites·8 claims
- 4868US5229435ASkin-protecting compositionSHIONOGI & CO·Filed 1990·Granted Jul 20, 1993·36 cites·10 claims
- 4968US4901128ASemiconductor memoryHITACHI LTD·Filed 1986·Granted Feb 13, 1990·25 cites·21 claims
- 5068US4884182ACurrent source power converting apparatus with overvoltage protectionHITACHI LTD·Filed 1988·Granted Nov 28, 1989·26 cites·12 claims
Showing the top 50 of 127 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →