DN

Dokei Nagayasu

Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
📍 Kasai, JP: #2,743 of 5,842 inventorsTop 50%
Overall (All Time): #2,165,227 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6998572 Light energy processing device and method Tadashi Endo, Masahiro Sato, Koji Fujii, Mamoru Watanabe, Yasuhiro Goto +4 more 2006-02-14
6791061 Optical machining device Koji Fujii, Kazushige Hirasawa, Makoto Ryudo 2004-09-14