Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10647648 | Method for purifying organic solvent | Hitoshi Takada, Akira Nakamura, Koji Yamanaka | 2020-05-12 |
| 10227540 | Powder lubricant composition and method for manufacturing seamless steel pipe | Sumio Iida, Takayuki Fukushima | 2019-03-12 |
| 8999900 | Two-component anti-seizure agent for hot metal working process, and method of manufacturing seamless pipe using thereof | Sumio Iida, Yuuji Tanaka, Kazuhiro Shimoda, Hirofumi Hori, Akira Motoki +1 more | 2015-04-07 |
| 7165431 | Cr-plated mandrel bar for manufacturing hot seamless tube and method of manufacturing the same | Sumio Iida, Toshiro Anraku, Hirofumi Hori | 2007-01-23 |