Inventor

NOMURA RITSUKO

JP4 patents

Patents

4 patents

US7391189B2Jun 24, 2008

Step-up/down DC-DC converter

RICOH KK10 citations82

US6917190B2Jul 12, 2005

Power supply apparatus varying an output constant voltage in response to a control signal from a load circuit

RICOH KK19 citations81

US7095216B2Aug 22, 2006

Power supply method and apparatus

RICOH KK10 citations71

US7570034B2Aug 4, 2009

Step-up/down DC-DC converter

RICOH KK5 citations60