Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6816330 | Method for forming a magnetic pattern in a magnetic recording medium, magnetic recording medium magnetic recording device and photomask | Hiroyuki Ikeda | 2004-11-09 |
| 6744583 | Method for forming a magnetic pattern in a magnetic recording medium, a magnetic pattern forming device, a magnetic recording medium and a magnetic recording device | Hiroyuki Ikeda, Yuzo Seo | 2004-06-01 |
| 6731446 | METHOD FOR FORMING A MAGNETIC PATTERN IN A MAGNETIC RECORDING MEDIUM, METHOD FOR PRODUCING A MAGNETIC RECORDING MEDIUM, MAGNETIC PATTERN FORMING DEVICE, MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING DEVICE | Hiroyuki Ikeda, Masahiro Kawashima, Takeshi Kuriwada, Yuzo Seo | 2004-05-04 |