Inventor

AKAMATSU KEIJI

JP19 patents

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

AKAMATSU KEIJI

PANASONIC IP MAN CO LTD

Power conversion apparatus

Semiconductor device and inverter using same

Regenerative power conversion system with inverter and converter

Power conversion device including primary inverter, transformer, secondary converter

Power conversion apparatus including a transformer, an invertor circuit and a plurality of switching devices controlled by a controller

Electric power converter

Power conversion device including primary inverter, transformer, secondary converter, and controller

Power conversion apparatus

Power conversion apparatus having a switching circuit unit that includes a switching device and an auxiliary switching device

Switching power supply including a rectifier circuit having switching elements, and electric power converter

MURATA MITSUHIRO

Plasma display device having a protective layer including a base protective layer and a particle layer

Plasma display device having a protective layer including a base protective layer and a particle layer

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

direct-current power supply and battery-powered electronic apparatus equipped with the power supply

ROLAND CORP

Circuit for preferentially selecting highest and lowest tones

PANASONIC CORP

Plasma display panel drive circuit and plasma display device

OGAWA KENJI

Method for driving plasma display panel, and plasma display device

TAKEDA MINORU

Method for driving a plasma display panel using subfield groups

AKAMATSU KEIJI

Method for driving a plasma display panel by using a holding period between subfield groups

IBARAKI HIROSHI

Plasma display device and method for controlling an amplitude of a waveform used for driving a plasma display panel based on temperature