Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645472 | Polishing device | Isao Nagahashi | 1997-07-08 |
| 5326544 | Combination sterilized hot-water producer and incineration system | — | 1994-07-05 |
| 5287876 | Water piping system | — | 1994-02-22 |