Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835230 | Method for leaching zinc concentrate | Manabu Kanno, Kaoru Saruta, Akira Narumi | 2004-12-28 |
| 6829429 | Video recording device for recording video signal including character information | Masaki Kitahashi, Kazuhiko Nakamura | 2004-12-07 |
| 6794798 | Display device and electronic equipment employing piezoelectric speaker | Shigeo Ishii, Hisayoshi Matsui, Hiroshi Kishi | 2004-09-21 |
| 6696037 | Method of recovering sulfur from minerals and other sulfur-containing compounds | Toyohisa Fujita, Kaoru Saruta | 2004-02-24 |