KU

Kiyotaka Umemoto

Rohm Co.: 34 patents #39 of 2,292Top 2%
Overall (All Time): #102,824 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 26–34 of 34 patents

Patent #TitleCo-InventorsDate
6949917 Switching power supply unit Ko Takemura 2005-09-27
6922042 DC/DC converter Ko Takemura 2005-07-26
6917189 Electric power supply unit having improved output voltage response Ko Takemura, Kenichi Nakata 2005-07-12
6894470 Power supply device and electric appliance employing the same Ko Takemura 2005-05-17
6891736 Multiphase DC/DC converter Ko Takemura 2005-05-10
6815939 Switching power supply unit Ko Takemura 2004-11-09
6531853 DC-DC converter 2003-03-11
6448752 Switching regulator 2002-09-10
6369558 Switching regulator 2002-04-09