Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8098448 | Method for setting zone format of a disk for storing data and disk drive | Yoshihiko Maeda, Masaomi Ikeda, Nobuhiro Kuwamura, Toshihiko Tsunokawa | 2012-01-17 |
| 6985321 | Head suspension assembly mounting nonvolatile memory and magnetic disk device | — | 2006-01-10 |
| 6707628 | Head suspension assembly mounting nonvolatile memory and magnetic disk device | — | 2004-03-16 |
| 6057021 | Magnetic recording media and magnetic recording system using the same | Akira Ishikawa, Yuzuru Hosoe, Yoshihiro Shiroishi, Masatoshi Takeshita, Yotsuo Yahisa +6 more | 2000-05-02 |
| 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 |
| 5750230 | Magnetic recording media and magnetic recording system using the same | Akira Ishikawa, Yuzuru Hosoe, Yoshihiro Shiroishi, Masatoshi Takeshita, Yotsuo Yahisa +6 more | 1998-05-12 |
| 5723198 | Multi-layered magnetic recording medium and magnetic recording system employing the same | Yuzuru Hosoe, Yoshihiro Shiroishi, Akira Ishikawa, Futoshi Tomiyama, Kazuetsu Yoshida +7 more | 1998-03-03 |
| 5618639 | Magnetic recording medium and magnetic recording apparatus | Tomoyuki Ohno, Yoshihiro Shiroishi, Yotsuo Yahisa, Yuichi Ootani | 1997-04-08 |
| 5000982 | Magnetic recording medium and method for producing the same | Heigo Ishihara, Waichi Nagashiro, Fuzio Maeda | 1991-03-19 |
| 4985295 | Magnetic recording medium and method for producing the same | Heigo Ishihara, Waichi Nagashiro, Fuzio Maeda | 1991-01-15 |
| 4966797 | Process for producing magnetic recording medium, magnetic paint, and magnetic disk | Heigo Ishihara, Takanori Kudo | 1990-10-30 |