Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D432218 | Trap portion of a water closet | Seijiro Kawamura, Minoru Tani | 2000-10-17 |
| D406329 | Trap portion of a water closet | Seijiro Kawamura, Minoru Tani | 1999-03-02 |
| D399294 | Water closet | Seijiro Kawamura, Minoru Tani | 1998-10-06 |
| D384136 | Water closet | Seijiro Kawamura, Minoru Tani | 1997-09-23 |
| D379496 | Water closet | Seijiro Kawamura, Minoru Tani | 1997-05-27 |