KN

Keiichi Nagasaka

Fujitsu Limited: 16 patents #1,836 of 24,456Top 8%
HB Hgst Netherlands, B.V.: 12 patents #51 of 972Top 6%
WT Western Digital Technologies: 5 patents #645 of 3,180Top 25%
HI Hitachi: 4 patents #8,942 of 28,497Top 35%
UA University Of Alabama: 1 patents #109 of 324Top 35%
Overall (All Time): #86,601 of 4,157,543Top 3%
38
Patents All Time

Issued Patents All Time

Showing 26–38 of 38 patents

Patent #TitleCo-InventorsDate
7428127 CPP magnetoresistive effect element and magnetic storage device having a CPP magnetoresistive effect element Yoshihiko Seyama, Hirotaka Oshima, Yutaka Shimizu, Atsushi Tanaka 2008-09-23
7342751 Magnetoresistive effect having multiple base layers between an electrode and an antiferromagnetic layer, magnetic head, and magnetic recording device Yutaka Shimizu, Atsushi Tanaka 2008-03-11
7180713 Magnetoresistive element Yoshihiko Seyama, Takahiko Sugawara, Yutaka Shimizu, Atsushi Tanaka 2007-02-20
7116533 Magnetoresistive sensor Yoshihiko Seyama, Atsushi Tanaka, Yutaka Shimizu, Shin Eguchi, Hitoshi Kanai +3 more 2006-10-03
7116528 Magnetoresistive element having current-perpendicular-to-the-plane structure and having improved magnetic domain control Yutaka Shimizu 2006-10-03
6995960 Spin valve magnetoresistive sensor having CPP structure Yoshihiko Seyama, Atsushi Tanaka, Yutaka Shimizu, Shin Eguchi, Hitoshi Kanai +3 more 2006-02-07
6927952 CPP GMR free layer having ferromagnetic layers with parallel magnetization separated by non-magnetic layer Yutaka Shimizu, Hirotaka Oshima, Yoshihiko Seyama, Atsushi Tanaka 2005-08-09
6801413 Magnetic sensor, magnetic head and magnetic recording apparatus Yoshihiko Seyama, Yutaka Shimizu, Atsushi Tanaka 2004-10-05
6781799 Current perpendicular-to-the-plane structure spin valve magnetoresistive head Yoshihiko Seyama, Atsushi Tanaka, Yutaka Shimizu 2004-08-24
6661624 Spin-valve magnetoresistive device having a layer for canceling a leakage magnetic field 2003-12-09
6364961 Spin-valve magnetic head with the pinned layer having different directions for its magnetization axis and its easy axis Yutaka Shimizu, Hitoshi Kishi, Atsushi Tanaka 2002-04-02
6355115 Spin-valve magnetic head with the pinned layer having different directions for its magnetization axis and its easy axis Yutaka Shimizu, Hitoshi Kishi, Atsushi Tanaka 2002-03-12
6034845 Spin-valve magnetic head with the pinned layer having different directions for its magnetization axis and its easy axis Yutaka Shimizu, Hitoshi Kishi, Atsushi Tanaka 2000-03-07