MI

Masao Iwakura

HI Hitachi: 15 patents #2,636 of 28,497Top 10%
HI Hitachi Video Engineering, Incorporated: 3 patents #19 of 181Top 15%
HG HGST: 2 patents #1,032 of 1,677Top 65%
HC Hitachi Engineering Co.: 1 patents #187 of 572Top 35%
Overall (All Time): #278,458 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
7925028 Electronic device having a blower with noise control Nobuhiro Yokoyama, Takashi Chikusa 2011-04-12
7733599 Structure to prevent deformation of magnetic disk device housing Hiroaki Shigenaga, Sunao Yonekawa, Masami Miyatake 2010-06-08
7330334 Magnetic disk apparatus with shroud and having open space downstream of moveable arms in communication with bypass channel Hayato Shimizu, Shigeo Nakamura, Kazuo Sakai, Shigenori Togashi, Masayuki Kaiho +7 more 2008-02-12
6898049 Magnetic disk apparatus with air flow bypass channel Hayato Shimizu, Shigeo Nakamura, Kazuo Sakai, Shigenori Togashi, Masayuki Kaiho +7 more 2005-05-24
6728074 Method and apparatus for information recording and reproducing using an air force latch mechanism Kazuyoshi Hanada, Yasuyuki Hozumi, Kazumi Fujimoto 2004-04-27
6717774 Information recording and reproducing apparatus with an air force latch mechanism Kazuyoshi Hanada, Yasuyuki Hozumi, Kazumi Fujimoto 2004-04-06
6665139 Magnetic-disc unit with gap between disc and shroud Mikio Tokuyama, Hayato Shimizu, Satomitsu Imai, Shozo Saegusa, Masahiko Sega +7 more 2003-12-16
6600626 Magnetic disk apparatus Hayato Shimizu, Shigeo Nakamura, Kazuo Sakai, Shigenori Togashi, Masayuki Kaiho +7 more 2003-07-29
6490123 Disc drive having 3.5 inch form factor housing and 2.5 inch form factor disk media Nobuyuki Okunaga, Kazuo Nakagoshi, Takuji Ogawa, Chuma Akira, Fumio Kugiya +5 more 2002-12-03
6369978 Magnetic disk apparatus with shroud having opening downstream of moveable arm Hayato Shimizu, Shigeo Nakamura, Kazuo Sakai, Shigenori Togashi, Masayuki Kaiho +1 more 2002-04-09
5720442 Capstanless tape driving method and information recording and reproduction apparatus Norihisa Yanagihara, Shinsuke Nakagawa, Shigeyuki Kobata, Kazuo Sakai 1998-02-24
5537266 Tape loading device and magnetic conversion apparatus Taichiro Yamashita, Kazuo Sakai, Yasuhiro Nemoto, Shigeyuki Kobata, Masatoshi Ishikawa 1996-07-16
5315460 Magnetic recording and reproducing apparatus including S fixed chassis for supporting a head drum and a movable chassis for mounting a tape cassette Hidekazu Takeda, Nobuo Masuoka, Tetsuo Itou, Ikuo Nishida, Yoshiharu Yamashita +2 more 1994-05-24
5278707 Tape loading mechanism for magnetic recording and/or reproducing apparatus Naoko Tsuchiya, Hidekazu Takeda, Kyuichirou Nagai, Ikuo Nishida, Yoshiharu Yamashita +3 more 1994-01-11
5124854 Cassette loading apparatus having an inner cassette holder supported on an outer cassette holder Koji Iyota, Ikuo Nishida, Yosiharu Yamasita, Motonori Ohmori, Hidekazu Takeda +1 more 1992-06-23
5119257 Rotary head device having a motor within the rotary drum, and magnetic recording and reproducing apparatus using the same Tetsuo Itou, Hidekazu Takeda, Nobuo Masuoka, Toshio Osada 1992-06-02
5065264 Capstan arrangement for a magnetic recording/reproduction apparatus Motonori Ohmori, Ikuo Nishida, Koji Iyota, Hidekazu Takeda, Tetsuo Itou 1991-11-12