Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4984829 | Screw coupling joint | Takeshi Saigo, Haruo Kamimura, Mitsuaki Hori, Hidenori Yasuoka | 1991-01-15 |
| 4623173 | Screw joint coupling for oil pipes | Masao Handa, Mikio Ueki, Mitsuaki Hori, Hidenori Yasuoka, Toshio Sato +2 more | 1986-11-18 |