Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4937027 | Method of manufacturing corrosion-resistant concrete or mortar | Akira Oshio, Kazumi Jimbo | 1990-06-26 |
| 4937033 | Method of forming protective layer on concrete or mortar | Akira Oshio, Kazumi Jimbo | 1990-06-26 |