Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667946 | Optical information recording medium | Hiroki Yamamoto, Takashi Namekawa, Yasuo Imanishi, Motoyasu Terao, Toshimichi Shintani +1 more | 2003-12-23 |
| 6577472 | Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture | Hiroki Yamamoto, Takashi Namekawa, Yasutaka Suzuki, Akira Kato, Noriyuki Takeo +4 more | 2003-06-10 |
| 6512655 | Magnetic head with sealing glass composition | Hiroki Yamamoto, Takashi Namekawa, Ken Takahashi, Noriyuki Kumasaka, Kenkichi Inada | 2003-01-28 |
| 6503858 | Glass composition, structure, and apparatus using the same | Hiroki Yamamoto, Takashi Namekawa, Ken Takahashi, Noriyuki Kumasaka, Kenkichi Inada | 2003-01-07 |