Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809442 | Spray drying process and apparatus therefor | Shoichi Iwaya, Hiroki Takahashi, Masaaki Ohkawara, Katsumi Kobayashi, Takashi Ito | 1989-03-07 |
| 4808883 | Discharge lamp device having semiconductor ceramic cathode | Shouichi Iwaya, Munemitsu Hamada | 1989-02-28 |