Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648154 | Inorganic constructional board and method of manufacturing the same | Akio Koh, Hisashi Fujiwara, Shigezoh Masamoto, Keiji Shutoh | 1997-07-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648154 | Inorganic constructional board and method of manufacturing the same | Akio Koh, Hisashi Fujiwara, Shigezoh Masamoto, Keiji Shutoh | 1997-07-15 |