YM

Youji Maruyama

HI Hitachi: 7 patents #5,859 of 28,497Top 25%
HG HGST: 6 patents #440 of 1,677Top 30%
NC Nippon Seiki Co.: 1 patents #124 of 311Top 40%
Overall (All Time): #353,962 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8000058 Magnetic head for perpendicular recording having pole pieces provided on surface of soft magnetic film Tadayuki Iwakura, Masafumi Mochizuki, Ichiro Ohdake 2011-08-16
7881012 Magnetic head and magnetic disk storage apparatus mounting the head Masafumi Mochizuki, Kimitoshi Etoh, Hiroshi Fukui 2011-02-01
7679860 Thin film magnetic head with layer having high saturation magnetic flux density, and magnetic storage apparatus Kazue Kudo, Gen Oikawa, Hiromi Shiina 2010-03-16
7589937 Thin film magnetic head with high Fe alloy plating film and manufacturing method thereof Gen Oikawa, Kazue Kudo, Noriyuki Saiki, Hiromi Shiina 2009-09-15
7485378 Magnetic thin film head Gen Oikawa, Kazue Kudo, Hiromi Shiina 2009-02-03
7262940 Separate read/write magnetic head Tadayuki Iwakura 2007-08-28
5994893 Driving apparatus for stepping motor type instrument Kouichi Sato 1999-11-30
5615192 Information recording and reproducing method and apparatus Atsushi Kikukawa, Sumio Hosaka, Toshimichi Shintani, Takeshi Shimano 1997-03-25
5050122 Bloch line memory device and method for operating same Ryo Suzuki 1991-09-17
5047978 Bloch line memory device Tadashi Ikeda, Ryo Suzuki 1991-09-10
4949304 Bloch line memory device Tadashi Ikeda, Ryo Suzuki 1990-08-14
4845671 Bloch line memory device Tadashi Ikeda, Teruaki Takeuchi, Ryo Suzuki 1989-07-04
4831584 Bloch line memory device Ryo Suzuki 1989-05-16
4415262 Photomask Naoki Koyama, Hiroshi Umezaki, Norikazu Tsumita, Yutaka Sugita 1983-11-15