Inventor · disambiguated record
Atsuji Nakagawa
Also filed as: NAKAGAWA ATSUJI
22 granted patents·7 pending applications·152 citations·filing 1998–2017
94Inventor score
Top patents by PatentIndex Score
29 records- 0190US7306340B2Projection system using a high-pressure discharge lamp adapted to d.c. lighting, and method of operating the samePHOENIX ELECTRIC CO LTD·Filed 2005·Granted Dec 11, 2007·15 cites·4 claims
- 0285US6600266B1Mount for lamp and lamp seal structure employing the mountPHOENIX ELECTRIC CO LTD·Filed 2000·Granted Jul 29, 2003·24 cites·15 claims
- 0384US6509674B1Discharge lamp with ventilation passagePHOENIX ELECTRIC CO LTD·Filed 1999·Granted Jan 21, 2003·45 cites·8 claims
- 0474US10368408B2Light emitting device and LED light bulbTOSHIBA MATERIALS CO LTD·Filed 2016·Granted Jul 30, 2019·2 cites·14 claims
- 0570US6713972B2Ultra-high pressure discharge lamp lighting method, ultra-high pressure discharge lamp to which the method is applicable and ballast for use therein, and lighting system incorporating the lamp and the ballastPHOENIX ELECTRIC CO LTD·Filed 2001·Granted Mar 30, 2004·19 cites·16 claims
- 0668US7504780B2Power supply unit for light source and method of controlling the sameRUBYCON CORP·Filed 2007·Granted Mar 17, 2009·5 cites·8 claims
- 0767US7517093B2Projection-type system and method of operating the samePHOENIX ELECTRIC CO LTD·Filed 2004·Granted Apr 14, 2009·7 cites·10 claims
- 0863US9099293B2Method and circuit for lighting high-pressure discharge lampPHOENIX ELECTRIC CO LTD·Filed 2014·Granted Aug 4, 2015·1 cites·9 claims
- 0962US7348737B2Lighting circuit for high-pressure discharge lampPHOENIX ELECTRIC CO LTD·Filed 2006·Granted Mar 25, 2008·7 cites·2 claims
- 1060US8040077B2Starting circuit of starting device for high-pressure discharge lamp including auxiliary light source, starting device including the starting circuit, and lighting system including the starting devicePHOENIX ELECTRIC CO LTD·Filed 2009·Granted Oct 18, 2011·1 cites·6 claims
- 1160US6914393B2Method and device for lighting high pressure discharge lampsPHOENIX ELECTRIC CO LTD·Filed 2003·Granted Jul 5, 2005·8 cites·5 claims
- 1255US9148926B2LED lampPHOENIX ELECTRIC CO LTD·Filed 2014·Granted Sep 29, 2015·0 cites·7 claims
- 1354US6713963B2Ultra-high pressure discharge lampPHOENIX ELECTRIC CO LTD·Filed 2003·Granted Mar 30, 2004·4 cites·5 claims
- 1452US10056220B2Manufacturing method of high-pressure discharge lamp and sealed part structure for high-pressure discharge lampPHOENIX ELECTRIC CO LTD·Filed 2017·Granted Aug 21, 2018·0 cites·1 claims
- 1552US2009224667A1Auxiliary light source and lighting system having the samePHOENIX ELECTRIC CO LTD·Filed 2009·Application pending·0 cites
- 1649US10368409B2Light emitting device and LED light bulbTOSHIBA MATERIALS CO LTD·Filed 2017·Granted Jul 30, 2019·0 cites·16 claims
- 1749US9362103B2High pressure discharge lamp and lighting method thereofPHOENIX ELECTRIC CO LTD·Filed 2014·Granted Jun 7, 2016·0 cites·2 claims
- 1848US2010026726A1Image projection system by means of direct current type high voltage dischargePHOENIX ELECTRIC CO LTD·Filed 2006·Application pending·0 cites
- 1947US9812280B2Manufacturing method of high-pressure discharge lamp and sealed part structure for high-pressure discharge lampPHOENIX ELECTRIC CO LTD·Filed 2015·Granted Nov 7, 2017·0 cites·8 claims
- 2047US7478928B2Light source devicePHOENIX ELECTRIC CO LTD·Filed 2006·Granted Jan 20, 2009·0 cites·4 claims
- 2146US6242861B1Direct current discharge lamp and light source having the discharge lamp attached to reflectorPHOENIX ELECTRIC CO LTD·Filed 1998·Granted Jun 5, 2001·7 cites·14 claims
- 2245US2009230888A1Discharge lamp operation devicePHOENIX ELECTRIC CO LTD·Filed 2007·Application pending·0 cites
- 2343US7808167B2High-pressure discharge lamp and light sources device using the samePHOENIX ELECTRIC CO LT D·Filed 2008·Granted Oct 5, 2010·0 cites·12 claims
- 2443US2006050512A1Ultra-high pressure discharge lamp unit and light source apparatusPHOENIX ELECTRIC CO LTD·Filed 2005·Application pending·0 cites
- 2541US2008042538A1Metallic Concave Reflection Mirror, Light Source and Light Source Apparatus Using the Same, and Lighting Circuit ThereofPHOENIX ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 2639US6285130B1Metal halide lampPHOENIX ELECTRIC CO LTD·Filed 1998·Granted Sep 4, 2001·4 cites·4 claims
- 2739US2011080728A1Light emitting devicePHOENIX ELECTRIC CO LTD·Filed 2010·Application pending·0 cites
- 2838US2010171421A1High-pressure discharge lampPHOENIX ELECTRIC CO LTD·Filed 2010·Application pending·0 cites
- 2937US6335593B1Electric discharge lamp with an improved sealing structure improving uniformity of light output and method of makingPHOENIX ELECTRIC CO LTD·Filed 1999·Granted Jan 1, 2002·3 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →