Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8082768 | Piercing and rolling plug, method of regenerating such piercing and rolling plug, and equipment line for regenerating such piercing and rolling plug | Yasuyoshi Hidaka, Kazuhiro Shimoda, Kouji Nakaike, Yasuto Higashida, Takateru Inage +5 more | 2011-12-27 |
| 8065900 | Method of manufacturing plug used to pierce and roll metal material, method of manufacturing metal pipe and plug used to pierce and roll metal material | Yasuyoshi Hidaka, Yasuhiro Kouchi | 2011-11-29 |
| 7866199 | Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel | Tomio Yamakawa, Kazuhiro Shimoda | 2011-01-11 |