SO

Shuji Ohtawa

SI Seiko Instruments: 3 patents #474 of 1,437Top 35%
Overall (All Time): #1,673,036 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4785435 Self-chargeable electronic timepiece with operating voltage checking Yuichi Inoue, Chiaki Nakamura, Hiroyuki Masaki 1988-11-15
4750099 Circuit for charging capacitors Yuichi Inoue, Hitoshi Ochiai, Yoshihiko Kiyono, Chiaki Nakamura 1988-06-07
4737944 Electronic timepiece Yuichi Inoue, Hiroshi Odagiri, Hiroyuki Masaki, Masao Kasuga 1988-04-12