RN

Ritsuko Nomura

Ricoh Company: 4 patents #4,167 of 9,818Top 45%
Overall (All Time): #1,248,420 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7570034 Step-up/down DC-DC converter Shohichi Nitta, Masahiro Matsuo 2009-08-04
7391189 Step-up/down DC-DC converter Shohichi Nitta, Masahiro Matsuo 2008-06-24
7095216 Power supply method and apparatus Masahiro Matsuo 2006-08-22
6917190 Power supply apparatus varying an output constant voltage in response to a control signal from a load circuit Masahiro Matsuo, Shoichi Nitta 2005-07-12