Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973462 | Process for producing high purity silica | Seki Akira, Yuuki Narita | 1990-11-27 |
| 4902671 | Manufacturing method of conductive or superconductive thin film | Hideomi Koinuma, Kazuo Fueki, Masashi Kawasaki | 1990-02-20 |