Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816194 | Method of destroying a brittle body by hydration expansion | Takaaki Katayama, Shiro Ishii, Hachiro Kubota | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816194 | Method of destroying a brittle body by hydration expansion | Takaaki Katayama, Shiro Ishii, Hachiro Kubota | 1989-03-28 |