Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5784803 | Oil removing method for a pipe coil | Takashi Miyajima, Yoshihiro Umeda | 1998-07-28 |
| 5667603 | Hardening process and apparatus for holed flat parts | Masanori Ichikawa, Tadayoshi Yoshioka, Shinichi Takizawa | 1997-09-16 |
| 5603167 | Oil removing apparatus and oil removing method for a pipe coil | Takashi Miyajima, Yoshihiro Umeda | 1997-02-18 |