Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5622372 | Metal seal ring and a method of producing the same | Katsuhide Fujisawa, Masakatsu Takahashi | 1997-04-22 |
| 4575972 | Grinding machine for use with rolling mill | Toshio Ohki, Masaomi Matsumoto, Takashi Sakuraya, Keinosuke Tokushige | 1986-03-18 |