Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540674 | Silicon nitride composite refractories | Akira Watanabe, Yoshimitsu Takeuchi, Noboru Shinoda, Kenji Fujiwara | 1985-09-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540674 | Silicon nitride composite refractories | Akira Watanabe, Yoshimitsu Takeuchi, Noboru Shinoda, Kenji Fujiwara | 1985-09-10 |