YK

Yoshiaki Komma

Sumitomo Electric Industries: 5 patents #22 of 2,038Top 2%
Overall (1997): #3,041 of 185,788Top 2%
5
Patents 1997

Issued Patents 1997

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5703856 Optical head and optical data recording and reproducing apparatus having the same Hideki Hayashi, Sadao Mizuno, Noboru Ito, Kenichiro Urairi 1997-12-30
5687153 Optical head device and optical information apparatus using a lithium niobate hologram with divisional areas to diffract light to corresponding photo detector areas Seiji Nishino, Shin-ichi Kadowaki, Hiroaki Yamamoto, Makoto Kato, Tetsuo Saimi 1997-11-11
5648951 Movable optical head integrally incorporated with objective lens and hologram element Makoto Kato, Shin-ichi Kadowaki, Yoshikazu Hori, Seiji Nishino, Tetsuo Saimi 1997-07-15
5644413 Optical head for adjusting a positional relation between the information medium and the optical head Sadao Mizuno, Makoto Kato, Hidenori Wada, Seiji Nishino 1997-07-01
5594713 Optical pickup head apparatus Seiji Nishino, Makoto Kato, Kaoru Matsuda 1997-01-14