Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804072 | Recording head clogging detection method and its device | Hiroshi Yohda, Haruo Isaka, Hideaki Mukae, Kouhei Baba, Kazunori Umee | 2004-10-12 |
| 6690879 | Magnetic recording and reproducing apparatus of helical scan type | Hirofumi Uchida, Takeshi Otsuka, Keiichi Ishida, Hiroshi Yohda | 2004-02-10 |