KA

Kiyoshi Akamatsu

HI Hitachi: 6 patents #6,582 of 28,497Top 25%
HG HGST: 2 patents #144 of 483Top 30%
HI Hiatchi: 1 patents #1 of 84Top 2%
Overall (All Time): #584,683 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
7259936 Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device Hiroki Yamamoto, Takashi Namekawa, Takashi Naito, Yasutaka Suzuki, Akira Kato +4 more 2007-08-21
7035049 Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device Hiroki Yamamoto, Takashi Namekawa, Takashi Naito, Yasutaka Suzuki, Akira Kato +4 more 2006-04-25
6937445 Recording/reproducing separated type head with heat radiating structure Isamu Yuito 2005-08-30
6801397 Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device Hiroki Yamamoto, Takashi Namekawa, Takashi Naito, Yasutaka Suzuki, Akira Kato +4 more 2004-10-05
6690544 Magnetic head and magnetic head manufacturing method Atsuko Okawa, Yasuo Hira, Hirotaka Imayama, Masayasu Fujisawa, Saburou Suzuki +5 more 2004-02-10
6577472 Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture Hiroki Yamamoto, Takashi Namekawa, Takashi Naito, Yasutaka Suzuki, Akira Kato +4 more 2003-06-10
6504680 Magnetic head and magnetic head manufacturing method Atsuko Okawa, Yasuo Hira, Hirotaka Imayama, Masayasu Fujisawa, Saburou Suzuki +5 more 2003-01-07
6278582 Magnetic head and magnetic head manufacturing method Atsuko Okawa, Yasuo Hira, Hirotaka Imayama, Masayasu Fujisawa, Saburou Suzuki +5 more 2001-08-21
6096445 Substrate for a magnetic recording medium, the magnetic recording medium, and a method of producing the same Masatomo Terakado, Youichi Inomata, Yotsuo Yahisa, Akira Ishikawa 2000-08-01