Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5082296 | Spiral wound gasket and fabrication method thereof | Junichi Aizawa, Yasushi Omata, Kakuichi Kodama | 1992-01-21 |
| 4489132 | Spherical bodies of carbon or graphite | — | 1984-12-18 |