Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5333484 | Method of ironing cylindrical workpiece of austenite stainless steel, with controlled thickness reduction | Norio Itoh | 1994-08-02 |
| 5287713 | Method and apparatus for ironing and trimming cylindrical portion of workpiece, using stepped punch and die having tapered die hole | Norio Itoh | 1994-02-22 |