HK

Hidekazu Kohira

HG HGST: 21 patents #104 of 1,677Top 7%
HI Hitachi: 18 patents #2,067 of 28,497Top 8%
HB Hgst Netherlands, B.V.: 3 patents #257 of 972Top 30%
📍 Ibaraki, JP: #102 of 6,779 inventorsTop 2%
Overall (All Time): #73,857 of 4,157,543Top 2%
42
Patents All Time

Issued Patents All Time

Showing 26–42 of 42 patents

Patent #TitleCo-InventorsDate
6795275 Magnetic disk device and magnetic head slider Hidetoshi Anan, Tetsuya Matsusaki, Yoshihiro Shiroishi, Masaaki Matsumoto, Hideaki Tanaka +4 more 2004-09-21
6760193 Magnetic head gimbal assembly and magnetic disk unit Hiromitsu Tokisue, Masaaki Matsumoto, Masayuki Suzuki, Yoshinori Takeuchi, Toshihiko Shimizu 2004-07-06
6744598 Magnetic disk device and magnetic head slider Masaaki Matsumoto, Hideaki Tanaka, Teruyoshi Higashiya, Kiyoshi Hashimoto, Akira Matsuda +1 more 2004-06-01
6744600 Magnetic disk device and magnetic head slider Masaaki Matsumoto, Hideaki Tanaka, Teruyoshi Higashiya, Kiyoshi Hashimoto, Akira Matsuda +1 more 2004-06-01
6690543 Magnetic disk drive with air bearing surface pad on movable portion and method of controlling Masayuki Kurita, Masaaki Matsumoto, Junguo Xu, Yuuichi Ootani, Hideaki Tanaka +2 more 2004-02-10
6657820 Magnetic head slider Masaaki Matsumoto, Hideaki Tanaka, Akira Matsuda, Shozo Saegusa 2003-12-02
6628480 Magnetic head slider having optimized ratio of negative pressure recess to front step bearing Masaaki Matsumoto, Kiyoshi Hashimoto, Masayoshi Endo, Akio Takakura, Yoshinori Takeuchi +2 more 2003-09-30
6556381 Magnetic disk device and magnetic head slider Masaaki Matsumoto, Hideaki Tanaka, Teruyoshi Higashiya, Kiyoshi Hashimoto, Akira Matsuda +1 more 2003-04-29
6493179 Magnetic head gimbal assembly and magnetic disk unit Hiromitsu Tokisue, Masaaki Matsumoto, Masayuki Suzuki, Yoshinori Takeuchi, Toshihiko Shimizu 2002-12-10
6445544 Magnetic head gimbal assembly and magnetic disk unit Hiromitsu Tokisue, Masaaki Matsumoto, Masayuki Suzuki, Yoshinori Takeuchi, Toshihiko Shimizu 2002-09-03
6181524 Magnetic disk apparatus with slider and slider supporting mechanism including flexible section integrally formed from same material Mikio Tokuyama, Kenji Mori, Toshihiko Simizu, Hiromu Hirai, Takao Terayama 2001-01-30
6157519 Magnetic head gimbal assembly of a magnetic disk unit having a load point matched with the center of impact Hiromitsu Tokisue, Masaaki Matsumoto, Masayuki Suzuki, Yoshinori Takeuchi, Toshihiko Shimizu 2000-12-05
5973880 Negative pressure flying head slider having improved side rails construction Kiyoshi Hashimoto, Masaaki Matsumoto, Yasuo Kojima, Shinji Yonemura 1999-10-26
5862017 Rotary disk storage unit and head suspension therefor Mikio Tokuyama, Hiromitsu Tokisue 1999-01-19
5519552 Rotary disk storage unit and head suspension therefor Mikio Tokuyama, Hiromitsu Tokisue 1996-05-21
5457545 Facsimile apparatus and image signal display method and image signal recording method Shunichi Oohara, Michihiro Watanabe, Tatsuya Nagata, Kazuytaka Sato, Shogo Matsumoto 1995-10-10
5430591 Negative pressure flying head slider having siderails with narrow width portion Yoshinori Takeuchi, Kenji Mori, Masaaki Matsumoto, Hiroshi Agari, Jyousei Shimizu +7 more 1995-07-04