Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839099 | Fire-retardant for woody materials | Kiyoshi Umehara, Nobuo Kobayashi, Tsutomu Imai | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839099 | Fire-retardant for woody materials | Kiyoshi Umehara, Nobuo Kobayashi, Tsutomu Imai | 1989-06-13 |