Inventor

HAMANA TETSUYA

JP5 patents

⚠️ This page may combine multiple inventors who share the name “HAMANA TETSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HAMANA TETSUYA

2 patents

US8193727B2Jun 5, 2012

Lamp end of life protection circuit and method for an electronic dimming ballast

HAMANA TETSUYA6 citations69

US8766540B2Jul 1, 2014

Lighting device, headlamp lighting device, and headlamp unit and vehicle having same

HAMANA TETSUYA1 citations46

YAMAMOTO MASAFUMI

2 patents

US8253351B2Aug 28, 2012

Electronic ballast with multimode lamp power control

YAMAMOTO MASAFUMI4 citations60

US8203282B2Jun 19, 2012

Electronic ballast with lamp end of life detection and protection circuits

YAMAMOTO MASAFUMI1 citations50

PANASONIC ELEC WORKS CO LTD

1 patent

US7973493B2Jul 5, 2011

Discharge lamp lighting device, and illuminating device

PANASONIC ELEC WORKS CO LTD6 citations59