Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873062 | Apparatus for the growth of single crystals | Kohji Tada | 1989-10-10 |
| 4863554 | Process for pulling a single crystal | Akihisa Kawasaki, Ryusuke Nakai, Shintaro Miyazawa, Keigo Hoshikawa | 1989-09-05 |