Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4784978 | Hexagonal boron nitride powder having excellent sinterability and a method for the preparation thereof | Takeshi Ogasawara, Takahisa Koshida, Toshimitsu Koitabashi | 1988-11-15 |