Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857500 | Method for manufacturing the metallic carrier base material for maintaining a catalyst for exhaust gas purification | Haruo Serizawa | 1989-08-15 |
| 4853360 | Method for manufacturing the metallic carrier base material for maintaining a catalyst for exhaust gas purification | — | 1989-08-01 |