Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5000760 | CBN abrasive-grains, method for producing the same, and grinding wheel | Hirohiko Ohtsubo, Eiichi Iizuka | 1991-03-19 |
| 4551195 | Method for growing boron nitride crystals of cubic system | Eiichi Iizuka, Tomoji Sando, Shinji Kashima | 1985-11-05 |