Inventor · disambiguated record
Keiji Nakatsu
Also filed as: NAKATSU KEIJI
8 granted patents·110 citations·filing 1986–2007
87Inventor score
Top patents by PatentIndex Score
8 records- 0184US4788421AApparatus for controlling relative movement of an optical head to an optical disk with velocity detectionMITSUBISHI ELECTRIC CORP·Filed 1986·Granted Nov 29, 1988·31 cites·14 claims
- 0282US4835752ADevice for driving and controlling optical head for use in optical disk systemMITSUBISHI ELECTRIC CORP·Filed 1987·Granted May 30, 1989·28 cites·8 claims
- 0371US4901299AOptical disk reading head controllerMITSUBISHI ELECTRIC CORP·Filed 1987·Granted Feb 13, 1990·19 cites·5 claims
- 0462US8280568B2Electric train car controlling deviceNAKATSU KEIJI·Filed 2007·Granted Oct 2, 2012·8 cites·18 claims
- 0560US4955009AOptical disk drive apparatus having counter disable at seek start-upMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Sep 4, 1990·11 cites·12 claims
- 0644US8285430B2Controlling device for railway electric carYABUUCHI MASATAKA·Filed 2007·Granted Oct 9, 2012·3 cites·10 claims
- 0739US4887254AOptical disk drive device for positioning a carriage to a retract positionMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Dec 12, 1989·6 cites·19 claims
- 0837US5264911ALaser power measuring jig for optical disk unitMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Nov 23, 1993·4 cites·10 claims
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