Inventor · disambiguated record
Tetsuya Hamana
Also filed as: HAMANA TETSUYA
5 granted patents·2 pending applications·18 citations·filing 2007–2012
74Inventor score
Technology areasH05B
Top patents by PatentIndex Score
7 records- 0174US8193727B2Lamp end of life protection circuit and method for an electronic dimming ballastHAMANA TETSUYA·Filed 2009·Granted Jun 5, 2012·6 cites·2 claims
- 0273US7973493B2Discharge lamp lighting device, and illuminating devicePANASONIC ELEC WORKS CO LTD·Filed 2007·Granted Jul 5, 2011·6 cites·10 claims
- 0370US8253351B2Electronic ballast with multimode lamp power controlYAMAMOTO MASAFUMI·Filed 2009·Granted Aug 28, 2012·4 cites·13 claims
- 0459US8766540B2Lighting device, headlamp lighting device, and headlamp unit and vehicle having sameHAMANA TETSUYA·Filed 2012·Granted Jul 1, 2014·1 cites·15 claims
- 0558US8203282B2Electronic ballast with lamp end of life detection and protection circuitsYAMAMOTO MASAFUMI·Filed 2009·Granted Jun 19, 2012·1 cites·5 claims
- 0638US2010270949A1Electronic ballast with input voltage fault controlONISHI NAOKI·Filed 2010·Application pending·0 cites
- 0738US2010270932A1Fault detection and shutdown control circuits and methods for electronic ballastsONISHI NAOKI·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →