MI

Masukazu Igarashi

HI Hitachi: 31 patents #867 of 28,497Top 4%
HB Hgst Netherlands, B.V.: 11 patents #56 of 972Top 6%
HG HGST: 3 patents #567 of 1,677Top 35%
Overall (All Time): #65,734 of 4,157,543Top 2%
45
Patents All Time

Issued Patents All Time

Showing 26–45 of 45 patents

Patent #TitleCo-InventorsDate
7813071 Thermally assisted recording system Fumiko Akagi, Hideki Saga 2010-10-12
7446969 Thermally assisted recording system Fumiko Akagi, Hideki Saga 2008-11-04
6728051 Recording equalizer and magnetic recording/reproducing apparatus using the equalizer Yohji Maruyama, Kazuetsu Yoshida, Ikuo Saitoh 2004-04-27
6671116 Magnetic recording system including magnetic recording medium having three-dimensional random orientation of axis of easy magnetization Fumiko Akagi, Kazuetsu Yoshida, Akira Ishikawa 2003-12-30
6635367 Magnetic recording medium Fumiko Akagi, Hideki Zaitsu, Futoshi Tomiyama 2003-10-21
6627255 Method of manufacturing a magnetic recording media Nobuyuki Inaba, Tomoo Yamamoto, Teruaki Takeuchi, Yoshio Takahashi 2003-09-30
6549355 Recording equalizer and magnetic recording/reproducing apparatus using the equalizer Yohji Maruyama, Kazuetsu Yoshida, Ikuo Saitoh 2003-04-15
6544672 Magnetic recording medium and magnetic storage Masaaki Futamoto, Nobuyuki Inaba, Tomoo Yamamoto, Yuzuru Hosoe, Akira Ishikawa 2003-04-08
6487031 Recording equalizer and magnetic recording/reproducing apparatus using the equalizer Yohji Maruyama, Kazuetsu Yoshida, Ikuo Saitoh 2002-11-26
6456448 Magnetic recording system including magnetic recording medium having three-dimensional random orientation of axis of easy magnetization Fumiko Akagi, Kazuetsu Yoshida, Akira Ishikawa 2002-09-24
6365287 Magnetic recording media and magnetic storage device Nobuyuki Inaba, Tomoo Yamamoto, Teruaki Takeuchi, Yoshio Takahashi 2002-04-02
6356402 Recording equalizer and magnetic recording/reproducing apparatus using the equalizer Yohji Maruyama, Kazuetsu Yoshida, Ikuo Saitoh 2002-03-12
6251532 Magnetic recording medium and magnetic storage device using the same Masaaki Futamoto, Nobuyuki Inaba, Tomoo Yamamoto, Yuzuru Hosoe, Akira Ishikawa 2001-06-26
6212024 Recording equalizer and magnetic recording/reproducing apparatus performing write timing compensation Yohji Maruyama, Kazuetsu Yoshida, Ikuo Saitoh 2001-04-03
6177208 Magnetic recording system and magnetic recording medium used therefor Tomoo Yamamoto, Nobuyuki Inaba, Masaaki Futamoto, Yuzuru Hosoe, Ichiro Tamai +2 more 2001-01-23
6001447 Longitudinal magnetic recording media and magnetic storage apparatus using the same Kiwamu Tanahashi, Yuzuru Hosoe, Ichiro Tamai, Tetsuya Kanbe, Tomoo Yamamoto +1 more 1999-12-14
5919581 Magnetic recording system and magnetic recording medium used therefor Tomoo Yamamoto, Nobuyuki Inaba, Masaaki Futamoto, Yuzuru Hosoe, Ichiro Tamai +2 more 1999-07-06
5906884 Magnetic recording medium Yotsuo Yahisa, Yoshibumi Matsuda, Joe Inagaki, Enji Fujita, Takao Yonekawa +3 more 1999-05-25
5815343 Magnetic recording medium, process for producing the same and magnetic recording system Akira Ishikawa, Yoshihiro Shiroishi, Yuzuru Hosoe, Yotsuo Yahisa, Tomoo Yamamoto +3 more 1998-09-29
5561300 Atomic switching devices and logical circuits Yasuo Wada, Seiichi Kondo, Tsuyoshi Uda, Hiroshi Kajiyama, Hisashi Nagano +2 more 1996-10-01