HN

Hidehiko Numasato

WT Western Digital Technologies: 7 patents #474 of 3,180Top 15%
HI Hitachi: 5 patents #7,555 of 28,497Top 30%
HG HGST: 3 patents #1,032 of 1,677Top 65%
Overall (All Time): #305,340 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12271631 Data storage device sorting access commands based on performance and off-track mitigation optimization Hiroshi Uchida, Akira Yokozuka, Shrey Khanna, Kevin Tzou 2025-04-08
12223982 Head velocity derating for data storage devices including disk media Hiroshi Uchida, Akira Yokozuka, Shrey Khanna, Peyman Niazi 2025-02-11
11915731 Data storage device with notch filter calibration based on multi-rate excitation and error rejection Shinsuke Nakagawa, Zaifeng Chen 2024-02-27
11817122 Data storage device with notch filter calibration based on multi-rate excitation and error rejection Shinsuke Nakagawa, Zaifeng Chen 2023-11-14
10930310 Data storage device sorting access commands based on peak current for multiple actuators Hiroshi Uchida, Kexiu Liu, Shrey Khanna 2021-02-23
10839839 Data storage device managing peak current for multiple actuators Hiroshi Uchida, Kexiu Liu, Shrey Khanna 2020-11-17
10410657 Data storage device employing nominal and adaptive multi-actuator decoupler Jianguo Zhou, Masahito Kobayashi, Tetsuo Semba, Feng Hong 2019-09-10
7173790 Magnetic disk apparatus with dual stage actuator Masahito Kobayashi, Shinsuke Nakagawa, Yoshio Soyama 2007-02-06
6961205 Magnetic disk apparatus Takenori Atsumi, Jiro Abe 2005-11-01
6898039 Positioning control device for two-stage actuator Masahito Kobayashi, Atsushi Okuyama 2005-05-24
6888696 Magnetic disk apparatus and servo signal recording method Kei Yasuna, Takashi Yamaguchi, Marutomo Goto 2005-05-03
6707633 Magnetic disk device including coarse and micro actuators Atsushi Okuyama, Masaki Odai, Shigeo Nakamura, Masahito Kobayashi 2004-03-16
6407876 Magnetic disk apparatus having an accelerometer for detecting acceleration in the positioning direction of the magnetic head Takashi Yamaguchi, Katsuhiro Tsuneta, Katsumoto Onoyama, Tsuyoshi Arai, Yoshikatsu Fujii +2 more 2002-06-18
6335845 Magnetic disk apparatus having an accelerometer for detecting acceleration in the positioning direction of the magnetic head Takashi Yamaguchi, Katsuhiro Tsuneta, Katsumoto Onoyama, Tsuyoshi Arai, Yoshikatsu Fujii +2 more 2002-01-01
5986845 Apparatus for positioning magnetic head and method of the same Takashi Yamaguchi, Katsuhiro Tsuneta, Katsumoto Onoyama, Tsuyoshi Arai, Yoshikatsu Fujii +2 more 1999-11-16