Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6645931 | Solid-shaped detergent | Yuhki Yanagisawa, Nobuyoshi Yamaguchi, Hitoshi Takaya, Hiroyuki Yamashita | 2003-11-11 |
| 6534474 | Surfactant composition | Kyoko Okada, Teruo Kubota, Hitoshi Takaya, Hiroyuki Yamashita | 2003-03-18 |
| 6521585 | Method for producing crystalline alkali metal silicate granules and granular high density detergent | Hiroyuki Yamashita, Teruo Kubota, Katsuhiko Kasai, Shigeru Tamura, Masaki Tsumadori | 2003-02-18 |