RA

Reiko Arai

HI Hitachi: 10 patents #4,206 of 28,497Top 15%
HG HGST: 10 patents #217 of 1,677Top 15%
HB Hgst Netherlands, B.V.: 4 patents #198 of 972Top 25%
HI Hitach: 1 patents #1 of 68Top 2%
Overall (All Time): #164,816 of 4,157,543Top 4%
25
Patents All Time

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDate
8802247 Perpendicular magnetic recording medium with high medium S/N Hiroyuki Matsumoto, Mitsuhiro Shoda, Yuzuru Hosoe, Katsumi Mabuchi 2014-08-12
8705208 Perpendicular magnetic recording medium (PMRM) and magnetic storage device using the same Hiroyuki Nakagawa, Ichiro Tamai, Kiwamu Tanahashi 2014-04-22
8507115 Perpendicular magnetic recording medium Niroyuki Nakagawa 2013-08-13
8390956 Perpendicular magnetic recording medium having FCC seed layers Shun Tonooka, Hiroyuki Nakagawa, Kiwamu Tanahashi 2013-03-05
8071228 Perpendicular magnetic recording medium Hiroyuki Suzuki, Masayoshi Shimizu 2011-12-06
7875373 Perpendicular magnetic recording medium and magnetic storage apparatus using the same Yoshiyuki Hirayama, Ichiro Tamai 2011-01-25
7875371 Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic recording/reproducing apparatus using the same Kiwamu Tanahashi, Yoshinori Honda, Mineaki Kodama 2011-01-25
7691500 Perpendicular magnetic recording medium Masayoshi Shimizu 2010-04-06
7666530 Perpendicular magnetic recording medium, and magnetic recording/reproducing apparatus using the same Yoshinori Honda, Hiroyuki Matsumoto 2010-02-23
7641989 Perpendicular magnetic recording medium for high density recording and manufacturing of the same Ikuko Takekuma, Yoko Ogawa, Yoshiyuki Hirayama, Yuzuru Hosoe, Tomio Iwasaki 2010-01-05
7534507 Perpendicular magnetic recording medium for high density magnetic recording and manufacturing of the same Yoshiyuki Hirayama, Yuzuru Hosoe, Tomio Iwasaki, Yoko Ogawa, Ikuko Takekuma 2009-05-19
7289284 Stray field detector, magnetic disk drive, and method of head escaping Takehiko Hamaguchi, Atsushi Kikugawa, Hideaki Maeda, Liping Shen, Mikio Suzuki 2007-10-30
7217467 Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus Kiwamu Tanahashi, Atsushi Kikugawa 2007-05-15
7153596 Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic storage apparatus using the same Kiwamu Tanahashi, Atsushi Kikugawa 2006-12-26
7072155 Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus Hiromasa Takahashi, Susumu Soeya 2006-07-04
6947316 Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus Hiromasa Takahashi, Susumu Soeya 2005-09-20
6870718 Magnetoresistive sensor including magnetic domain control layers having high electric resistivity Hiromasa Takahashi, Susumu Soeya 2005-03-22
6728081 Magnetic head and magnetic disk apparatus Yoshiaki Kawato, Katsuro Watanabe 2004-04-27
6671136 Magnetic head and magnetic disk apparatus Yoshiaki Kawato, Katsuro Watanabe 2003-12-30
6636391 Magnetoresistive sensor, magnetic head and magnetic disk apparatus Katsuro Watanabe, Yoshiaki Kawato 2003-10-21
6633465 Magnetoresistive element Hiroyuki Hoshiya, Katsuya Mitsuoka, Masaaki Sano, Susumu Soeya, Hiroshi Fukui +2 more 2003-10-14
6249405 Magnetic head including magnetoresistive element Hiroyuki Hoshiya, Katsuya Mitsuoka, Masaaki Sano, Susumu Soeya, Hiroshi Fukui +2 more 2001-06-19
6125019 Magnetic head including magnetoresistive element Hiroyuki Hoshiya, Katsuya Mitsuoka, Masaaki Sano, Susumu Soeya, Hiroshi Fukui +2 more 2000-09-26
5933297 Magnetic storage/read system with read head including magnetoresistive element Hiroyuki Hoshiya, Katsuya Mitsuoka, Masaaki Sano, Susumu Soeya, Hiroshi Fukui +2 more 1999-08-03
5051856 Thin film magnetic head with mixed crystal structures Shinji Narishige, Katsuya Mitsuoka, Takao Imagawa, Kouichi Nishioka, Akira Kumagai +7 more 1991-09-24