Inventor · disambiguated record
Kazuo Sakai
Also filed as: AKIBA SHIGEYUKI · SAKAI KAZUO
80 granted patents·11 pending applications·1,555 citations·filing 1978–2011
99Inventor score
Top patents by PatentIndex Score
91 records- 0193US7330334B2Magnetic disk apparatus with shroud and having open space downstream of moveable arms in communication with bypass channelHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Feb 12, 2008·14 cites·9 claims
- 0292US5214622AInformation display apparatusHITACHI LTD·Filed 1991·Granted May 25, 1993·132 cites·13 claims
- 0391US4961122AHydrodynamic grooved bearing deviceHITACHI LTD·Filed 1987·Granted Oct 2, 1990·55 cites·30 claims
- 0490US4502950AProcess for the solvent deasphalting of asphaltene-containing hydrocarbonsNIPPON OIL CO LTD·Filed 1984·Granted Mar 5, 1985·59 cites·8 claims
- 0589US4653058ADistributed feedback semiconductor laser with monitorKOKUSAI DENSHIN DENWA CO LTD·Filed 1983·Granted Mar 24, 1987·35 cites·10 claims
- 0688US6490123B1Disc drive having 3.5 inch form factor housing and 2.5 inch form factor disk mediaHITACHI LTD·Filed 1998·Granted Dec 3, 2002·43 cites·4 claims
- 0787US6665139B2Magnetic-disc unit with gap between disc and shroudHITACHI LTD·Filed 2001·Granted Dec 16, 2003·23 cites·26 claims
- 0887US6600626B2Magnetic disk apparatusHITACHI LTD·Filed 2002·Granted Jul 29, 2003·19 cites·9 claims
- 0987US5315422AOptical Mach-Zehnder type logic element which performs an XOR operationKOKUSAI DENSHIN DENWA CO LTD·Filed 1993·Granted May 24, 1994·76 cites·4 claims
- 1086US6369978B1Magnetic disk apparatus with shroud having opening downstream of moveable armHITACHI LTD·Filed 1999·Granted Apr 9, 2002·49 cites·8 claims
- 1186US5923494AMagnetic tape device and method of controlling magnetic tape deviceHITACHI LTD·Filed 1996·Granted Jul 13, 1999·56 cites·11 claims
- 1286US4573161ASemiconductor laserKOKUSAI DENSHIN DENWA CO LTD·Filed 1983·Granted Feb 25, 1986·29 cites·2 claims
- 1385US4660934AMethod for manufacturing diffraction gratingKOKUSAI DENSHIN DENWA CO LTD·Filed 1985·Granted Apr 28, 1987·54 cites·9 claims
- 1484US6670747B2Electron source device, method of manufacturing the same, and flat display apparatus comprising an electron source deviceTOSHIBA KK·Filed 2001·Granted Dec 30, 2003·19 cites·3 claims
- 1582US5520855ACoating solution composition for forming glass gel thin film, color glass gel filter, and display device using the sameTOSHIBA KK·Filed 1992·Granted May 28, 1996·41 cites·10 claims
- 1680US4682196AMulti-layered semi-conductor photodetectorKOKUSAI DENSHIN DENWA CO LTD·Filed 1985·Granted Jul 21, 1987·39 cites·3 claims
- 1779US7244343B2Sputtering apparatusORIGIN ELECTRIC·Filed 2003·Granted Jul 17, 2007·15 cites·14 claims
- 1879US5720442ACapstanless tape driving method and information recording and reproduction apparatusHITACHI LTD·Filed 1996·Granted Feb 24, 1998·34 cites·16 claims
- 1979US5495371AMagnetic tape library device and method for maintaining magnetic recording and reproducing device and magnetic headHITACHI LTD·Filed 1993·Granted Feb 27, 1996·30 cites·11 claims
- 2079US4874216AVariable-waveguide optical branching filterKOKUSAI DENSHIN DENWA CO LTD·Filed 1988·Granted Oct 17, 1989·38 cites·7 claims
- 2179US4525269AProcess for the solvent deasphalting of asphaltene-containing hydrocarbonsNIPPON OIL CO LTD·Filed 1984·Granted Jun 25, 1985·26 cites·8 claims
- 2278US8471484B2Reversed-polarity pulse generating circuit for direct current plasma and direct current plasma power supply unitWATANABE KIYOMI·Filed 2011·Granted Jun 25, 2013·9 cites·5 claims
- 2376US4340966ASemiconductor laser with buffer layerKOKUSAI DENSHIN DENWA CO LTD·Filed 1980·Granted Jul 20, 1982·24 cites·2 claims
- 2475US4992837ALight emitting semiconductor deviceKOKUSAI DENSHIN DENWA CO LTD·Filed 1989·Granted Feb 12, 1991·32 cites·9 claims
- 2575US4514287AProcess for the solvent deasphalting of asphaltene-containing hydrocarbonsNIPPON OIL CO LTD·Filed 1982·Granted Apr 30, 1985·23 cites·7 claims
- 2674US5428342AAnalyzing system for operating condition of electrical apparatusHITACHI LTD·Filed 1992·Granted Jun 27, 1995·49 cites·17 claims
- 2774US4573158ADistributed feedback semiconductor laserKOKUSAI DENSHIN DENWA CO LTD·Filed 1985·Granted Feb 25, 1986·21 cites·4 claims
- 2872US6495142B2Methods for treatment of impulse control disordersSAKAI KAZUO·Filed 2001·Granted Dec 17, 2002·9 cites·12 claims
- 2972US6416174B1Ink composition, pattern forming method, and color filterTOSHIBA KK·Filed 1999·Granted Jul 9, 2002·30 cites·18 claims
- 3072US4852108AWavelength tunable semiconductor laser with narrow band-pass active filter regionKOKUSAI DENSHIN DENWA CO LTD·Filed 1988·Granted Jul 25, 1989·19 cites·3 claims
- 3171US4805975AOptical waveguide switchKOKUSAI DENSHIN DENWA CO LTD·Filed 1988·Granted Feb 21, 1989·28 cites·12 claims
- 3270US4918496AInfrared emitting device with dislocation free layerKOKUSAI DENSHIN DENWA CO LTD·Filed 1988·Granted Apr 17, 1990·17 cites·7 claims
- 3368US5010376ALight emitting heterojunction semiconductor deviceKOKUSAI DENSHIN DENWA CO LTD·Filed 1990·Granted Apr 23, 1991·27 cites·13 claims
- 3468US4701930ADistributed feedback semiconductor laserKOKUSAI DENSHIN DENWA CO LTD·Filed 1985·Granted Oct 20, 1987·16 cites·3 claims
- 3565US6898049B2Magnetic disk apparatus with air flow bypass channelHITACHI LTD·Filed 2003·Granted May 24, 2005·4 cites·4 claims
- 3664US4731641AAvalanche photo diode with quantum well layerKOKUSAI DENSHIN DENWA CO LTD·Filed 1986·Granted Mar 15, 1988·19 cites·4 claims
- 3762US6544326B1Pigment dispersion composition, display apparatus, and method of manufacture the apparatusTOSHIBA KK·Filed 1999·Granted Apr 8, 2003·11 cites·17 claims
- 3862US5570831APneumatic static guide for a tapeHITACHI LTD·Filed 1993·Granted Nov 5, 1996·14 cites·10 claims
- 3960US5122844AQuantum well structure and semiconductor device using the sameKOKUSAI DENSHIN DENWA CO LTD·Filed 1991·Granted Jun 16, 1992·20 cites·10 claims
- 4059US4653059ADistributed feedback semiconductor laserKOKUSAI DENSHIN DENWA CO LTD·Filed 1985·Granted Mar 24, 1987·12 cites·4 claims
- 4158US4795225ASemiconductor optical switchKOKUSAI DENSHIN DENWA CO LTD·Filed 1988·Granted Jan 3, 1989·18 cites·4 claims
- 4256US4742414ARotary magnetic head device for magnetic recording/reproduction apparatusHITACHI LTD·Filed 1985·Granted May 3, 1988·10 cites·16 claims
- 4356US4665527ADistributed feedback semiconductor laserKOKUSAI DENSHIN DENWA CO LTD·Filed 1984·Granted May 12, 1987·10 cites·4 claims
- 4456US4553239ADistributed feedback semiconductor laserKOKUSAI DENSHIN DENWA CO LTD·Filed 1983·Granted Nov 12, 1985·10 cites·4 claims
- 4555US5989649APigment dispersion composition, display apparatus, and method of manufacturing the apparatusTOSHIBA KK·Filed 1999·Granted Nov 23, 1999·8 cites·16 claims
- 4655US2007053976A1Novel combination of drugs as antidepressantEISAI R&D MAN CO LTD·Filed 2006·Application pending·0 cites
- 4754US7166956B2Metal back-carrying fluorescent surface, metal back forming transfer film and image display unitFUJI PIGMENT·Filed 2002·Granted Jan 23, 2007·3 cites·9 claims
- 4854US5898263APigment dispersion composition, display apparatus, and method of manufacturing the apparatusTOSHIBA KK·Filed 1997·Granted Apr 27, 1999·8 cites·20 claims
- 4954US5464566ACoating solution composition for forming glass gel thin film, color glass gel filter, and display device using the sameTOSHIBA KK·Filed 1994·Granted Nov 7, 1995·13 cites·10 claims
- 5054US4761383AMethod of manufacturing avalanche photo diodeKOKUSAI DENSHIN DENWA CO LTD·Filed 1987·Granted Aug 2, 1988·11 cites·3 claims
Showing the top 50 of 91 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →