Inventor · disambiguated record
Hisao Okamoto
Also filed as: OKAMOTO HISAO
19 granted patents·1 pending application·375 citations·filing 1979–2014
95Inventor score
Files withDAINICHISEIKA COLOR CHEM14NISSAN MOTOR4HITACHI GLOBAL STORAGE TECH1HITACHI GLOBAL STORAGE TECH NL1
Top patents by PatentIndex Score
20 records- 0196US7508619B2Magnetic head and magnetic disc driveHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Mar 24, 2009·40 cites·12 claims
- 0296US6521038B2Near-infrared reflecting composite pigmentsDAINICHISEIKA COLOR CHEM·Filed 2001·Granted Feb 18, 2003·127 cites·18 claims
- 0394US7920359B2Magnetic recording apparatus with correlated main magnetic pole-to-shields spacing and main magnetic pole-to-medium layers spacingHITACHI GLOBAL STORAGE TECH NL·Filed 2008·Granted Apr 5, 2011·21 cites·10 claims
- 0488US6623556B2Near-infrared transmitting black azo pigmentsDAINICHISEIKA COLOR CHEM·Filed 2001·Granted Sep 23, 2003·25 cites·8 claims
- 0583US6821334B2Process for producing sulfonated solid particlesDAINICHISEIKA COLOR CHEM·Filed 2002·Granted Nov 23, 2004·23 cites·20 claims
- 0681US6299676B1Pigment dispersants, pigment dispersions and writing or recording pigment inksDAINICHISEIKA COLOR CHEM·Filed 1999·Granted Oct 9, 2001·17 cites·15 claims
- 0780US6726762B2Finely divided pigments and coloring compositionsDAINICHISEIKA COLOR CHEM·Filed 2002·Granted Apr 27, 2004·13 cites·13 claims
- 0879US5905101AAblator compositionsNISSAN MOTOR·Filed 1996·Granted May 18, 1999·34 cites·11 claims
- 0977US6302953B1Pigment dispersions for color filters, fabrication process of color filters, and color filtersDAINICHISEIKA COLOR CHEM·Filed 1999·Granted Oct 16, 2001·15 cites·13 claims
- 1077US5961711APigment dispersant, pigment dispersion, and pigment dispersion for color filterDAINICHISEIKA COLOR CHEM·Filed 1997·Granted Oct 5, 1999·17 cites·13 claims
- 1175US6471766B2Pigment dispersants and pigment compositions containing the sameDAINICHISEIKA COLOR CHEM·Filed 2001·Granted Oct 29, 2002·11 cites·17 claims
- 1272US9822266B2Near infrared-reflecting/transmitting azo pigment, method for manufacturing near infrared-reflecting/transmitting azo pigment, colorant composition using said azo pigments, item-coloring method and colored itemDAINICHISEIKA COLOR CHEM·Filed 2014·Granted Nov 21, 2017·1 cites·10 claims
- 1367US7611572B2Pixel-forming colorant compositions and their useDAINICHISEIKA COLOR CHEM·Filed 2006·Granted Nov 3, 2009·2 cites·13 claims
- 1467US4424085AComposite solid propellant containing FeOOH as burning rate modifierNISSAN MOTOR·Filed 1981·Granted Jan 3, 1984·13 cites·13 claims
- 1548US4302258AComposite propellant with 0.2μ or smaller metal fuelNISSAN MOTOR·Filed 1979·Granted Nov 24, 1981·6 cites·6 claims
- 1644US7888398B2PigmentDAINICHISEIKA COLOR CHEM·Filed 2005·Granted Feb 15, 2011·0 cites·5 claims
- 1744US4638052AAzo-pigment containing hydroxy naphthoic acid amide and an iminooxoisoindolenine componentsDAINICHISEIKA COLOR CHEM·Filed 1984·Granted Jan 20, 1987·2 cites·4 claims
- 1843US4369710AEnd-burning gas-generating composition grain containing intertwisted wiresNISSAN MOTOR·Filed 1981·Granted Jan 25, 1983·8 cites·8 claims
- 1941US7361698B2Water-based pigment inks, image recording method, and image recording systemDAINICHISEIKA COLOR CHEM·Filed 2003·Granted Apr 22, 2008·0 cites·16 claims
- 2040US2006219976A1Fluorescent colorant compositions, coloring process and colored articlesDAINICHISEIKA COLOR CHEM·Filed 2005·Application pending·0 cites
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