EK

Eiji Koyama

HI Hitachi: 4 patents #196 of 3,771Top 6%
HM Hitachi Maxell: 2 patents #13 of 93Top 15%
Sharp Kabushiki Kaisha: 1 patents #278 of 1,015Top 30%
📍 Tsuchiura, JP: #2 of 56 inventorsTop 4%
Overall (2004): #9,552 of 270,089Top 4%
5
Patents 2004

Issued Patents 2004

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6790502 Optically functional element and production method and application therefor Hiroki Yamamoto, Takashi Naito, Ken Takahashi, Motoyasu Terao, Toshimichi Shintani +5 more 2004-09-14
6749955 Information recording media and information recording drive Fumiyoshi Kirino, Nobuyuki Inaba, Hiroki Yamamoto, Takashi Naitou, Ken Takahashi +3 more 2004-06-15
6746749 Magnetic recording disk Fumiyoshi Kirino, Nobuyuki Inaba, Hiroki Yamamoto, Ken Takahashi, Takashi Naitou +3 more 2004-06-08
6734908 Correlated double sampling circuit and amplification type solid state imaging device employing the same Takashi Watanabe 2004-05-11
6700852 Information recording medium with recording film with cobalt oxide crystalline particles, and information recording device including the same Hiroki Yamamoto, Takashi Naito, Ken Takahashi, Sumio Hosaka, Motoyasu Terao +2 more 2004-03-02