Inventor · disambiguated record
Hironobu Ishikawa
Also filed as: ISHIKAWA HIRONOBU
6 granted patents·40 citations·filing 2002–2016
81Inventor score
Files withNGK SPARK PLUG CO6
Top patents by PatentIndex Score
6 records- 0174US10347521B2Heating member, electrostatic chuck, and ceramic heaterNGK SPARK PLUG CO·Filed 2016·Granted Jul 9, 2019·3 cites·9 claims
- 0266US6702466B2Ceramic dynamic-pressure bearing, motor having bearing, hard disk drive, polygon scanner, and method for manufacturing ceramic dynamic-pressure bearingNGK SPARK PLUG CO·Filed 2002·Granted Mar 9, 2004·12 cites·24 claims
- 0361US6619847B1Ceramic dynamic-pressure bearing, motor having bearing, hard disk drive, and polygon scannerNGK SPARK PLUG CO·Filed 2002·Granted Sep 16, 2003·11 cites·23 claims
- 0456US6659647B2Ceramic dynamic pressure bearing, motor with bearing, hard disk device, and polygon scannerNGK SPARK PLUG CO·Filed 2002·Granted Dec 9, 2003·5 cites·35 claims
- 0551US6619848B2Ceramic dynamic pressure bearing, motor with bearing, hard disc apparatus and polygon scannerNGK SPARK PLUG CO·Filed 2002·Granted Sep 16, 2003·5 cites·15 claims
- 0646US7215508B2Ceramic dynamic-pressure bearing and hard disk drive using the sameNGK SPARK PLUG CO·Filed 2002·Granted May 8, 2007·4 cites·42 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →