Inventor · disambiguated record
Masayasu Yamashita
Also filed as: YAMASHITA MASAYASU
30 granted patents·1,235 citations·filing 1988–2000
98Inventor score
Top patents by PatentIndex Score
30 records- 0199US4926485AOutput level control apparatusPIONEER ELECTRONIC CORP·Filed 1989·Granted May 15, 1990·241 cites·10 claims
- 0288US5485059ALighting circuit for vehicular discharge lampKOITO MFG CO LTD·Filed 1993·Granted Jan 16, 1996·67 cites·15 claims
- 0387US5016113AApparatus for reproducing and processing picture information including graphic codes from a recording mediumPIONEER ELECTRONIC CORP·Filed 1988·Granted May 14, 1991·55 cites·5 claims
- 0484US6340870B1Lighting circuit for discharge lampKOITO MFG CO LTD·Filed 2000·Granted Jan 22, 2002·49 cites·8 claims
- 0584US5828177ALight circuit for discharge lampKOITO MFG CO LTD·Filed 1997·Granted Oct 27, 1998·60 cites·20 claims
- 0683US5486740ALighting circuit for vehicular discharge lamp having DC/AC converterKOITO MFG CO LTD·Filed 1994·Granted Jan 23, 1996·56 cites·14 claims
- 0783US5422548ACut-off vehicular discharge lamp circuit having wait and monitor modesKOITO MFG CO LTD·Filed 1993·Granted Jun 6, 1995·47 cites·22 claims
- 0881US5663613ALighting circuit for discharge lampKOITO MFG CO LTD·Filed 1996·Granted Sep 2, 1997·55 cites·20 claims
- 0981US5449973ALighting circuit for vehicular discharge lampKOITO MFG CO LTD·Filed 1993·Granted Sep 12, 1995·44 cites·22 claims
- 1080US5514935ALighting circuit for vehicular discharge lampKOITO MFG CO LTD·Filed 1994·Granted May 7, 1996·48 cites·23 claims
- 1179US5629588ALighting circuit utilizing DC power for a discharge lamp utilizing AC powerKOITO MFG CO LTD·Filed 1995·Granted May 13, 1997·60 cites·19 claims
- 1278US6002215ALighting circuit for discharge lampKOITO MFG CO LTD·Filed 1998·Granted Dec 14, 1999·43 cites·11 claims
- 1376US6153987ALighting circuit for discharge lampKOITO MFG CO LTD·Filed 1997·Granted Nov 28, 2000·41 cites·9 claims
- 1474US5572094ALighting circuit for discharge lampKOITO MFG CO LTD·Filed 1995·Granted Nov 5, 1996·40 cites·12 claims
- 1571US5565743ALighting circuit for discharge lampKOITO MFG CO LTD·Filed 1995·Granted Oct 15, 1996·33 cites·11 claims
- 1669US4994925AMethod of recording and reproducing picture information, recording medium, and recording medium playing apparatusPIONEER ELECTRONIC CORP·Filed 1988·Granted Feb 19, 1991·15 cites·6 claims
- 1766US5939835ADischarge lamp lighting device with power system, control system and power source systemKOITO MFG CO LTD·Filed 1997·Granted Aug 17, 1999·35 cites·14 claims
- 1866US5907224AAbnormality detecting circuit for discharge lamp with delayed interruption for undervoltageKOITO MFG CO LTD·Filed 1997·Granted May 25, 1999·28 cites·10 claims
- 1966US5705898ALighting circuit for discharge lamp which restricts inversion of output voltage polarityKOITO MFG CO LTD·Filed 1996·Granted Jan 6, 1998·26 cites·20 claims
- 2065US5973457ALighting circuit for discharge lampKOITO MFG CO LTD·Filed 1998·Granted Oct 26, 1999·25 cites·14 claims
- 2162US6087776ADischarge lamp lighting circuit with protection circuitKOITO MFG CO LTD·Filed 1998·Granted Jul 11, 2000·23 cites·17 claims
- 2261US6034487ALighting circuit for discharge lampKOITO MFG CO LTD·Filed 1998·Granted Mar 7, 2000·21 cites·21 claims
- 2360US5925983ACircuit for inhibiting the supply of power to a discharge lampKOITO MFG CO LTD·Filed 1997·Granted Jul 20, 1999·19 cites·8 claims
- 2459US5936361ADischarge lamp lighting circuit with lighting condition detectorKOITO MFG CO LTD·Filed 1998·Granted Aug 10, 1999·20 cites·20 claims
- 2554US6175190B1Discharge-lamp lighting circuitKOITO MFG CO LTD·Filed 2000·Granted Jan 16, 2001·5 cites·6 claims
- 2654US5438480APrinted circuit board and electronic parts to be mounted thereonKOITO MFG CO LTD·Filed 1993·Granted Aug 1, 1995·16 cites·8 claims
- 2754US5382876ACord connection structure for connecting a ballast circuit and a starter circuitKOITO MFG CO LTD·Filed 1992·Granted Jan 17, 1995·16 cites·6 claims
- 2853US5783908ALighting circuit wherein the abnormality detection circuit gets its power directly from the auxiliary power supply sectionKOITO MFG CO LTD·Filed 1996·Granted Jul 21, 1998·16 cites·14 claims
- 2951US6034490ALighting circuit for discharge lampKOITO MFG CO LTD·Filed 1998·Granted Mar 7, 2000·15 cites·19 claims
- 3049US5914566ALighting circuit for applying a negative AC voltage to a discharge lampKOITO MFG CO LTD·Filed 1997·Granted Jun 22, 1999·16 cites·13 claims
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