Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4332073 | Method of producing multiple-wall composite pipes | Shigetomo Matsui | 1982-06-01 |
| 4319121 | Method of producing clad steel materials | — | 1982-03-09 |
| 4315778 | Flux composition for ceramic color, containing no harmful heavy metal | Kimitoshi Ueno | 1982-02-16 |