Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876438 | Control of the power to the heater and the speed of movement of a crystal rod by control of the crystal rod diameter | Nobuhiro Ohhara, Kenichi Taguchi | 1989-10-24 |
| 4866230 | Method of and apparatus for controlling floating zone of semiconductor rod | Yasuhiro Ikeda, Kunio Suzuki, Nobuhiro Ohara | 1989-09-12 |