| 7443625 |
Magnetic disk drive |
Takehiko Hamaguchi, Atsushi Nakamura, Yasutaka Nishida, Hisashi Takano, Yohji Maruyama +2 more |
2008-10-28 |
| 7221530 |
Magnetic head with high reliability of the data protection, magnetic disk apparatus including the magnetic head and the method of recording information on the magnetic disk apparatus without miserasing the previously recorded data |
Takehiko Hamaguchi, Miki Hara, Fumiko Akagi, Yasutaka Nishida |
2007-05-22 |
| 7057838 |
Magnetic disk device having a write head to write by shifting in a radial direction |
Takehiko Hamaguchi, Atsushi Nakamura, Yasutaka Nishida, Hisashi Takano, Yohji Maruyama +2 more |
2006-06-06 |
| 7031091 |
Magnetic recording apparatus and method of writing data at low temperature |
Takayuki Ichihara, Hideki Zaitsu |
2006-04-18 |
| 6940690 |
MAGNETIC HEAD WITH HIGH RELIABILITY OF THE DATA PROTECTION, MAGNETIC DISK APPARATUS INCLUDING THE MAGNETIC HEAD AND THE METHOD OF RECORDING INFORMATION ON THE MAGNETIC DISK APPARATUS WITHOUT MISERASING THE PREVIOUSLY RECORDED DATA |
Takehiko Hamaguchi, Miki Hara, Fumiko Akagi, Yasutaka Nishida |
2005-09-06 |
| 6909566 |
Magnetic recording/reproducing device |
Hideki Zaitsu, Takehiko Hamaguchi |
2005-06-21 |
| 6906889 |
Magnetic disk drive |
Takehiko Hamaguchi, Hisashi Takano, Toru Matsushita |
2005-06-14 |
| 6879460 |
Magnetic recording disk drive |
Takehiko Hamaguchi, Toru Matsushita, Hideki Zaitsu, Reijiro Tsuchiya, Hisashi Takano |
2005-04-12 |
| 6760172 |
Magnetic disk drive |
Takehiko Hamaguchi, Hideki Zaitsu |
2004-07-06 |
| 6717760 |
Magnetic disk drive |
Takehiko Hamaguchi, Hideki Zaitsu, Hisashi Takano |
2004-04-06 |
| 6657804 |
Magnetic recording disk drive |
Takehiko Hamaguchi, Toru Matsushita, Hideki Zaitsu, Reijiro Tsuchiya, Hisashi Takano |
2003-12-02 |
| 6657805 |
Method of controlling read write operation of a magnetic disk apparatus |
Yasutaka Nishida, Takehiko Hamaguchi, Hisashi Takano, Hiroshi Ide, Hideki Sawaguchi |
2003-12-02 |
| 6635367 |
Magnetic recording medium |
Masukazu Igarashi, Fumiko Akagi, Hideki Zaitsu |
2003-10-21 |
| 6515817 |
Magnetic disk drive |
Takehiko Hamaguchi, Hisashi Takano, Toru Matsushita |
2003-02-04 |
| 6473254 |
Method and system for compensation of nonlinearity or fluctuation of head-position signal |
Takehiko Hamaguchi, Hideki Zaitsu, Hisashi Takano |
2002-10-29 |
| 6404576 |
Method and system for compensation of nonlinearity or fluctuation of head-position signal |
Takehiko Hamaguchi, Hideki Zaitsu, Hisashi Takano |
2002-06-11 |
| 6327112 |
Adjacent track position detectable information storage apparatus |
Hiroshi Ide, Yasutaka Nishida, Takehiko Hamaguchi, Hisashi Takano, Yohji Maruyama +2 more |
2001-12-04 |
| 6310741 |
Magnetic disk apparatus with data track reassigning function |
Yasutaka Nishida, Takehiko Hamaguchi, Hisashi Takano, Hiroshi Ide, Hideki Sawaguchi |
2001-10-30 |
| 5723198 |
Multi-layered magnetic recording medium and magnetic recording system employing the same |
Yuzuru Hosoe, Yoshihiro Shiroishi, Akira Ishikawa, Kazuetsu Yoshida, Tomoo Yamamoto +7 more |
1998-03-03 |
| 5719719 |
Magnetic disk drive with sensing current adjustment of MR head |
Toshiaki Tsuyoshi |
1998-02-17 |