SK

Seiichiro Kawashima

Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
NT NTT: 1 patents #2,911 of 4,871Top 60%
Overall (All Time): #1,582,037 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7382986 Signal converter, optical transmitter and optical fiber transmission system Jun Ohya, Masaru Fuse 2008-06-03
6556327 Signal converter, optical transmitter and optical fiber transmission system Jun Ohya, Masaru Fuse 2003-04-29
5973820 FM modulation device Masaru Fuse, Kuniaki Utsumi, Koji Kikushima 1999-10-26