Inventor · disambiguated record
Masato Isogai
Also filed as: ISOGAI MASATO
24 granted patents·7 pending applications·811 citations·filing 1981–2024
97Inventor score
Files withHITACHI LTD16BROTHER IND LTD6HITACHI COMP PERIPHERALS CO3HITACHI MAXELL1HITACHI VEHICLE ENERGY LTD1
Top patents by PatentIndex Score
31 records- 0197US7495415B2DC backup power supply systemHITACHI LTD·Filed 2005·Granted Feb 24, 2009·50 cites·22 claims
- 0294US4576732AFerroelectric liquid crystal compounds and liquid crystal compositionsHITACHI LTD·Filed 1983·Granted Mar 18, 1986·112 cites·12 claims
- 0394US4508429AMethod for driving liquid crystal element employing ferroelectric liquid crystalHITACHI LTD·Filed 1983·Granted Apr 2, 1985·88 cites·9 claims
- 0490US8947023B2Battery control device and motor drive systemKAWAHARA YOUHEI·Filed 2009·Granted Feb 3, 2015·11 cites·13 claims
- 0589US8353374B2Battery module, battery device, electric motor drive system and vehicleHITACHI VEHICLE ENERGY LTD·Filed 2009·Granted Jan 15, 2013·38 cites·14 claims
- 0688US5064520AMethod and apparatus for forming a filmHITACHI LTD·Filed 1990·Granted Nov 12, 1991·78 cites·42 claims
- 0785US5194973ALiquid crystal display device and display apparatus using sameHITACHI LTD·Filed 1991·Granted Mar 16, 1993·69 cites·19 claims
- 0884US7157810B2Backup power supplyHITACHI COMP PERIPHERALS CO·Filed 2004·Granted Jan 2, 2007·47 cites·15 claims
- 0983US6977448B2Backup power supplyHITACHI COMP PERIPHERALS CO·Filed 2003·Granted Dec 20, 2005·46 cites·11 claims
- 1083US4586791AOptical modulation element with surface parallel and unidirectional alignment of LCHITACHI LTD·Filed 1983·Granted May 6, 1986·49 cites·7 claims
- 1177US4634226AOptical apparatus using ferroelectric liquid crystal and switching unit for emitted lightHITACHI LTD·Filed 1984·Granted Jan 6, 1987·39 cites·25 claims
- 1277US4591886ADriving method and apparatus for optical printer with liquid-crystal switching elementHITACHI LTD·Filed 1984·Granted May 27, 1986·39 cites·19 claims
- 1377US4400059ALiquid crystal display deviceHITACHI LTD·Filed 1981·Granted Aug 23, 1983·11 cites·6 claims
- 1475US6430066B2Electric power system having series connected capacitorHITACHI LTD·Filed 2001·Granted Aug 6, 2002·33 cites·15 claims
- 1573US2025026947A1Aqueous ink, ink jet recording method, ink jet recording device, and ink storage containerBROTHER IND LTD·Filed 2024·Application pending·0 cites
- 1672US2024368416A1Aqueous ink for ink jet recording, ink jet recording device, and ink jet recording methodBROTHER IND LTD·Filed 2024·Application pending·0 cites
- 1771US12134703B2Water-based ink, printed recording medium, inkjet recording method, inkjet recording device, and ink storage containerBROTHER IND LTD·Filed 2022·Granted Nov 5, 2024·0 cites·17 claims
- 1870US7245469B2DC backup power supply device and method for diagnosing the sameHITACHI COMP PERIPHERALS CO·Filed 2003·Granted Jul 17, 2007·27 cites·5 claims
- 1968US2025026945A1Aqueous ink, fixing agent, ink jet recording method, ink jet recording device, and ink storage containerBROTHER IND LTD·Filed 2024·Application pending·0 cites
- 2067US12173169B2Water-based ink, printed recording medium, inkjet recording method, inkjet recording device, and ink storage containerBROTHER IND LTD·Filed 2022·Granted Dec 24, 2024·0 cites·18 claims
- 2164US4759614AFerroelectric liquid crystal element with particular alignment film and a method for manufacturing the sameHITACHI LTD·Filed 1986·Granted Jul 26, 1988·23 cites·26 claims
- 2263US6593031B1Nickel metal-hydride cellHITACHI MAXELL·Filed 2000·Granted Jul 15, 2003·6 cites·4 claims
- 2359US5176854ANon-linear optical deviceHITACHI LTD·Filed 1991·Granted Jan 5, 1993·7 cites·7 claims
- 2457US2023167322A1Water-based ink for inkjet recording, printed recording medium, inkjet recording method, inkjet recording device, and ink storage containerBROTHER IND LTD·Filed 2022·Application pending·0 cites
- 2556US4836657AOptical change-over switch utilizing ferroelectric liquid crystal materialHITACHI LTD·Filed 1986·Granted Jun 6, 1989·18 cites·9 claims
- 2653US2005146223A1DC backup power supply systemFiled 2005·Application pending·0 cites
- 2746US2003222618A1DC backup power supply systemFiled 2003·Application pending·0 cites
- 2840US5101411AOrganic non-linear optical deviceHITACHI LTD·Filed 1990·Granted Mar 31, 1992·11 cites·15 claims
- 2940US2002186576A1Backup power supplyFiled 2002·Application pending·0 cites
- 3037US5313293ADot-matrix type display deviceHITACHI LTD·Filed 1992·Granted May 17, 1994·7 cites·16 claims
- 3135US5898607ARecording/reproducing method and recording/reproducing apparatusHITACHI LTD·Filed 1997·Granted Apr 27, 1999·2 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →