Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372855 | Treatment of inorganic building materials | Keishi Hamada, Fumio Tashiro, Shigemasa Otani, Kanemasa Nomaguchi, Sadayoshi Iijima | 1994-12-13 |
| 5023136 | Treated inorganic building materials | Keishi Hamada, Fumio Tashiro, Shigemasa Otani, Kanemasa Nomaguchi, Sadayoshi Iijima | 1991-06-11 |