Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990653 | Sulfur-containing acryl oligomer composition | Seiichiro Hayakawa | 1991-02-05 |
| 4302408 | Method of producing pyro-electric and piezo-electric elements | Iwao Seo | 1981-11-24 |