Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4967425 | Sanitary equipment for clean room | Seijiro Kawamura, Masami Iida, Takao Ikenaga, Toshifumi Shigematsu, Hiroshi Okada | 1990-11-06 |
| 4961431 | Toilet device with health examination system | Takao Ikenaga, Toshifumi Shigematsu, Kimiyoshi Yamamoto, Masatoshi Yada | 1990-10-09 |
| 4692951 | Sanitary facility room for clean room | Masaru Taki, Hiroshi Okada, Seijiro Kawamura, Koji Morita, Takao Ikenaga +2 more | 1987-09-15 |