Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6554817 | Device for disposing excrement | Nobuyoshi Oki, Syuei Tamura, Hiroshi Sakai | 2003-04-29 |
| 6443939 | Device for disposing excrement | Nobuyoshi Oki, Syuei Tamura, Hiroshi Sakai | 2002-09-03 |
| 5757097 | Dynamic pressure bearing device | — | 1998-05-26 |
| 5681297 | Device for disposing excrement | Takeo Hashimoto | 1997-10-28 |
| 4605233 | Magnetic fluid sealing device | — | 1986-08-12 |
| 4572779 | Process for the dewaxing of hydrocarbon fractions | Kazuyoshi Iwayama, Takehisa Inoue, Norio Hayakawa, Masaki Fujii | 1986-02-25 |