Inventor · disambiguated record
Masakazu Ushijima
Also filed as: USHIJIMA MASAKAZU
21 granted patents·4 pending applications·291 citations·filing 1994–2019
95Inventor score
Top patents by PatentIndex Score
25 records- 0193US5495405AInverter circuit for use with discharge tubeUSHIJIMA MASAKAZU·Filed 1994·Granted Feb 27, 1996·123 cites·5 claims
- 0290US7365501B2Inverter transformerGREATCHIP TECHNOLOGY CO LTD·Filed 2005·Granted Apr 29, 2008·21 cites·6 claims
- 0382US7548028B2Current-mode resonant inverter circuitUSHIJIMA MASAKAZU·Filed 2006·Granted Jun 16, 2009·10 cites·19 claims
- 0482US7282868B2Inverter circuit for discharge lamps for multi-lamp lighting and surface light source systemUSHIJIMA MASAKAZU·Filed 2004·Granted Oct 16, 2007·25 cites·6 claims
- 0581US10243406B2Wireless power transfer systemWQC INC·Filed 2014·Granted Mar 26, 2019·7 cites·14 claims
- 0679US7391166B2Parallel lighting system for surface light source discharge lampsUSHIJIMA MASAKAZU·Filed 2005·Granted Jun 24, 2008·10 cites·4 claims
- 0778US7589478B2Inverter circuit for discharge lamps for multi-lamp lighting and surface light source systemUSHIJIMA MASAKAZU·Filed 2007·Granted Sep 15, 2009·9 cites·19 claims
- 0877US10547214B2Wireless power transfer systemWQC INC·Filed 2019·Granted Jan 28, 2020·2 cites·26 claims
- 0977US7474064B2Lamp driving circuit for a discharge lamp and a control method thereofGREATCHIP TECHNOLOGY CO LTD·Filed 2007·Granted Jan 6, 2009·8 cites·17 claims
- 1070US7834726B2Module for parallel lighting and balancer coil for discharge lampHONG FEI CHEN·Filed 2008·Granted Nov 16, 2010·2 cites·4 claims
- 1170US7541749B2Current-mode resonant inverter circuit for discharge lampUSHIJIMA MASAKAZU·Filed 2006·Granted Jun 2, 2009·4 cites·12 claims
- 1269US5959412AInverter circuit for discharge tube having impedance matching circuitFiled 1997·Granted Sep 28, 1999·32 cites·3 claims
- 1368US7453216B2Current resonance type inverter circuit and power controlling methodUSHIJIMA MASAKAZU·Filed 2005·Granted Nov 18, 2008·9 cites·24 claims
- 1468US6774580B2Inverter circuit for a discharge tubeMINEBEA CO LTD·Filed 2002·Granted Aug 10, 2004·13 cites·25 claims
- 1564US7479740B2Module for parallel lighting and balancer coil for discharge lampHONG FEI CHEN·Filed 2005·Granted Jan 20, 2009·1 cites·9 claims
- 1660US11005300B2Wireless power transfer systemWQC INC·Filed 2019·Granted May 11, 2021·0 cites·14 claims
- 1754US7141935B2Inverter circuit for surface light source systemMASAKAZU USHIJIMA·Filed 2004·Granted Nov 28, 2006·9 cites·9 claims
- 1852US8102681B2Measurement apparatus, test apparatus, and measurement methodUSHIJIMA MASAKAZU·Filed 2009·Granted Jan 24, 2012·0 cites·27 claims
- 1951US7605544B2Current balancing circuitGREATCHIP TECHNOLOGY CO LTD·Filed 2007·Granted Oct 20, 2009·2 cites·18 claims
- 2050US2008211615A1Inverter transformerGREATCHIP TECHNOLOGY CO LTD·Filed 2008·Application pending·0 cites
- 2145US2008030283A1Circuit, Manufacturing Method And Inverter circuit For Discharge TubeGREATCHIP TECHNOLOGY CO LTD·Filed 2007·Application pending·0 cites
- 2244US2008068118A1Method for adjusting mutual inductance and a transformer that implements the sameGREATCHIP TECHNOLOGY CO LTD·Filed 2007·Application pending·0 cites
- 2340US2013170253A1Auxiliary power generation circuitUSHIJIMA MASAKAZU·Filed 2012·Application pending·0 cites
- 2437US7772785B2Parallel lighting system for surface light source discharge lampsUSHIJIMA MASAKAZU·Filed 2008·Granted Aug 10, 2010·0 cites·3 claims
- 2524US6201356B1Converter for correcting resonance frequency between backlit panel assembly of liquid crystal display and transformer of AC inverterFiled 1999·Granted Mar 13, 2001·4 cites·5 claims
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