Inventor · disambiguated record
Katsutoshi Sumida
Also filed as: SUMIDA KATSUTOSHI
5 granted patents·43 citations·filing 1997–2018
78Inventor score
Top patents by PatentIndex Score
5 records- 0178US6744705B1Optical disc recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jun 1, 2004·16 cites·9 claims
- 0262US6700841B1Optical-disc recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Mar 2, 2004·6 cites·1 claims
- 0351US6212143B1Spindle motor control system for a disk playerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Apr 3, 2001·11 cites·28 claims
- 0449US5835463ASpindle motor control system for use in an optical disk playerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Nov 10, 1998·10 cites·16 claims
- 0535US11387743B2Power supply device and control method for stably operating a device when a frequency of an input power supply fluctuatesPANASONIC IP MAN CO LTD·Filed 2018·Granted Jul 12, 2022·0 cites·10 claims
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