Inventor · disambiguated record

Tetsuyuki Hishikawa

Also filed as: HISHIKAWA TETSUYUKI

4 granted patents·81 citations·filing 1990–1999

74Inventor score

Technology areasG11B

Files withNEC CORP4

Top patents by PatentIndex Score

4 records

0190US5270885AHard-disk storage apparatus with memory storing data-head control informationNEC CORP·Filed 1991·Granted Dec 14, 1993·63 cites·2 claims
0251US5157566AMagnetic disk drive having a lock mechanism for preventing rotation of a disk spindle after the disk spindle is stoppedNEC CORP·Filed 1990·Granted Oct 20, 1992·10 cites·4 claims
0342US5805368AMethod and apparatus adopting a data surface servo method in which the servo information is in the form of a gray code and servo zone sector numbersNEC CORP·Filed 1997·Granted Sep 8, 1998·8 cites·2 claims
0425US6643089B1Magnetic disk system with selection of sector access mode based on access stateNEC CORP·Filed 1999·Granted Nov 4, 2003·0 cites·13 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →