Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888215 | Carbonaceous granular heat insulator and process for preparing the same | Fumio Takemura, Masao Ishiwata | 1989-12-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888215 | Carbonaceous granular heat insulator and process for preparing the same | Fumio Takemura, Masao Ishiwata | 1989-12-19 |