Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702540 | Vacuum carburizing method and device, and carburized products | — | 1997-12-30 |
| 5647143 | Vacuum-degreasing cleaning method | Kunihiko Ishikawa, Noboru Hiramoto | 1997-07-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702540 | Vacuum carburizing method and device, and carburized products | — | 1997-12-30 |
| 5647143 | Vacuum-degreasing cleaning method | Kunihiko Ishikawa, Noboru Hiramoto | 1997-07-15 |