Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858897 | Spring | — | 1989-08-22 |
| 4402750 | Building materials and method for manufacturing same | Tatsuro Okamura | 1983-09-06 |
| 4399046 | Flame-retardant building materials and method for making same | Tatsuro Okamura | 1983-08-16 |
| 4363739 | Aluminum hydroxide-based spray-on insulating material for building and method for the preparation thereof | Tatsuro Okamura | 1982-12-14 |