Inventor · disambiguated record
Tomoyasu Yamada
Also filed as: YAMADA TOMOYASU
38 granted patents·2 pending applications·1,010 citations·filing 1987–2024
98Inventor score
Files withSANKEN ELECTRIC CO LTD14KYOCERA DOCUMENT SOLUTIONS INC8PIONEER ELECTRONIC CORP7PIONEER CORP5KIOXIA CORP1
Top patents by PatentIndex Score
40 records- 0195US6972970B2Dc-to-dc converterSANKEN ELECTRIC CO LTD·Filed 2005·Granted Dec 6, 2005·64 cites·8 claims
- 0294US6445598B1Dc-dc converterSANKEN ELECTRIC CO LTD·Filed 2000·Granted Sep 3, 2002·104 cites·27 claims
- 0393US6842350B2Dc-to-dc converter with flyback period detector circuitSANKEN ELECTRIC CO LTD·Filed 2004·Granted Jan 11, 2005·115 cites·17 claims
- 0493US6714425B2Power factor corrected SMPS with light and heavy load control modesSANKEN ELECTRIC CO LTD·Filed 2002·Granted Mar 30, 2004·126 cites·9 claims
- 0590US6980446B2Circuit for starting power source apparatusSANKEN ELECTRIC CO LTD·Filed 2003·Granted Dec 27, 2005·83 cites·17 claims
- 0689US7542308B2DC-DC converterSANKEN ELECTRIC CO LTD·Filed 2006·Granted Jun 2, 2009·30 cites·4 claims
- 0789US5793542AAutomobile mirror assemblyFiled 1996·Granted Aug 11, 1998·146 cites·3 claims
- 0887US6134123ASwitch-mode DC power supply, monolithic IC and hybrid IC for the sameSANKEN ELECTRIC CO LTD·Filed 1999·Granted Oct 17, 2000·84 cites·20 claims
- 0986US6842353B2Switching power supply, and a method of driving the sameSANKEN ELECTRIC CO LTD·Filed 2004·Granted Jan 11, 2005·63 cites·16 claims
- 1081US6882551B2Switching power supply deviceSANKEN ELECTRIC CO LTD·Filed 2002·Granted Apr 19, 2005·38 cites·9 claims
- 1178US5003411AMethod for recording/reproducing and searching digital signals using a helical scan type rotary headPIONEER ELECTRONIC CORP·Filed 1990·Granted Mar 26, 1991·19 cites·6 claims
- 1274US7639516B2Switching power source deviceSANKEN ELECTRIC CO LTD·Filed 2005·Granted Dec 29, 2009·11 cites·5 claims
- 1374US7272018B2Switching power supply device and method for controlling switching power supply deviceSANKEN ELECTRIC CO LTD·Filed 2003·Granted Sep 18, 2007·27 cites·12 claims
- 1472US7064966B2Switching dc power supplySANKEN ELECTRIC CO LTD·Filed 2005·Granted Jun 20, 2006·14 cites·9 claims
- 1566US7145839B2Apparatus for editing management information to be recorded on an information storage mediumPIONEER CORP·Filed 2001·Granted Dec 5, 2006·4 cites·10 claims
- 1660US7271579B2AC signal level detection circuitSANKEN ELECTRIC CO LTD·Filed 2003·Granted Sep 18, 2007·9 cites·8 claims
- 1757US12205875B2Semiconductor device and manufacturing method thereofKIOXIA CORP·Filed 2022·Granted Jan 21, 2025·0 cites·20 claims
- 1856US11427426B2Sorting device and image forming apparatus provided therewithKYOCERA DOCUMENT SOLUTIONS INC·Filed 2021·Granted Aug 30, 2022·0 cites·7 claims
- 1956US5469307AMagnetic tape recording/playback apparatus for automatically detecting a desired programPIONEER ELECTRONIC CORP·Filed 1993·Granted Nov 21, 1995·11 cites·12 claims
- 2056US2025035204A1Gear connection structure connecting rotary shaft with pin, drive device, and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2024·Application pending·0 cites
- 2155US5793621ASwitching power supply for computer-driven displays or the likeSANKEN ELECTRIC CO LTD·Filed 1997·Granted Aug 11, 1998·24 cites·7 claims
- 2254US10824091B2Development device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2020·Granted Nov 3, 2020·0 cites·7 claims
- 2353US11314194B2Lighting device, static eliminating device, and image forming apparatus therewithKYOCERA DOCUMENT SOLUTIONS INC·Filed 2020·Granted Apr 26, 2022·0 cites·10 claims
- 2452US8446002B2Multilayer wiring substrate having a castellation structureSHIBUTA NORIKO·Filed 2010·Granted May 21, 2013·2 cites·4 claims
- 2552US8259453B2Card deviceMORITA KAORI·Filed 2010·Granted Sep 4, 2012·2 cites·11 claims
- 2652US5267095ADigital reconstructing of harmonics to extend band of frequency responsePIONEER ELECTRONIC CORP·Filed 1991·Granted Nov 30, 1993·9 cites·6 claims
- 2752US4992892AMusic start signals in a magnetic recording/reproducing devicePIONEER ELECTRONIC CORP·Filed 1987·Granted Feb 12, 1991·10 cites·4 claims
- 2850US10958207B2Attachment structure of photovoltaic cell moduleSOLAR FRONTIER KK·Filed 2014·Granted Mar 23, 2021·0 cites·3 claims
- 2949US10824093B2Development device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2020·Granted Nov 3, 2020·0 cites·10 claims
- 3049US7369464B2Editing device capable of changing the displaying mode of management informationPIONEER CORP·Filed 2004·Granted May 6, 2008·0 cites·3 claims
- 3149US7187628B2Editing device capable of imparting group management information to each recording trackPIONEER CORP·Filed 2004·Granted Mar 6, 2007·0 cites·7 claims
- 3249US4930031AApparatus for recording and reproducing digital signals using a helical scanPIONEER ELECTRONIC CORP·Filed 1988·Granted May 29, 1990·7 cites·3 claims
- 3348US11415924B2Sorting device and image forming apparatus therewithKYOCERA DOCUMENT SOLUTIONS INC·Filed 2021·Granted Aug 16, 2022·0 cites·6 claims
- 3448US7327641B2Editing device capable of displaying logical positions of tracksPIONEER CORP·Filed 2004·Granted Feb 5, 2008·0 cites·2 claims
- 3545US8466531B2Imaging device package, method of manufacturing the imaging device package, and electronic apparatusSEO RYOTARO·Filed 2011·Granted Jun 18, 2013·1 cites·12 claims
- 3644US11906922B2Sorting device and image forming apparatus therewithKYOCERA DOCUMENT SOLUTIONS INC·Filed 2021·Granted Feb 20, 2024·0 cites·6 claims
- 3744US4991040ATape recorder which displays unrecorded time on magnetic tapesPIONEER ELECTRONIC CORP·Filed 1989·Granted Feb 5, 1991·6 cites·16 claims
- 3837US2020264534A1Development device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2020·Application pending·0 cites
- 3934US7200090B2Information recording apparatus including information attaching and generating device which generates group control informationPIONEER CORP·Filed 2001·Granted Apr 3, 2007·0 cites·22 claims
- 4030US4864436ARotary head digital audio recording/reproducing apparatusPIONEER ELECTRONIC CORP·Filed 1987·Granted Sep 5, 1989·1 cites·20 claims
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