Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12359752 | Stainless steel pipe and method for manufacturing same | Shunsuke Sasaki, Masao Yuga, Hideo Kijima | 2025-07-15 |
| 12331371 | Stainless steel pipe and method for manufacturing same | Shunsuke Sasaki, Masao Yuga, Hideo Kijima | 2025-06-17 |
| 12269079 | Rolling mill for diameter reducing rolling and method for manufacturing strip material | Shunsuke Sasaki, Hiroki Ota | 2025-04-08 |
| 12172202 | Skew rolling apparatus, method for manufacturing seamless pipe shell, and method for manufacturing seamless steel pipe | Shunsuke Sasaki, Hideo Kijima | 2024-12-24 |
| 12157937 | Duplex stainless steel seamless pipe and method for manufacturing same | Shunsuke Sasaki, Hiroki Ota, Kazuki Fujimura, Masao Yuga | 2024-12-03 |
| 12140265 | Seamless pipe and method for manufacturing same | Shunsuke Sasaki, Masao Yuga, Hideo Kijima | 2024-11-12 |
| 11821051 | Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe | Shunsuke Sasaki, Hiroki Ushida, Yasushi Kato | 2023-11-21 |
| 11731184 | Rolling straightening machine and method of manufacturing a pipe or tube or a bar using same | Shunsuke Sasaki, Hiroki Ota | 2023-08-22 |
| 10837073 | High-strength heavy-walled stainless steel seamless tube or pipe and method of manufacturing the same | Shunsuke Sasaki, Yasushi Kato | 2020-11-17 |
| 10570471 | Equipment line for manufacturing seamless steel tube or pipe and method of manufacturing high-strength stainless steel seamless tube or pipe for oil wells using the equipment line | Shunsuke Sasaki, Hideto Kimura | 2020-02-25 |
| 10562085 | Equipment line for manufacturing heavy-walled steel products | Shunsuke Sasaki, Yasushi Kato | 2020-02-18 |
| 10544476 | Apparatus line for manufacturing seamless steel pipe and tube and method of manufacturing duplex seamless stainless steel pipe | Shunsuke Sasaki, Hiroki Ushida, Yasushi Kato | 2020-01-28 |
| 10441982 | Plug for rolling of seamless steel pipe, method for manufacturing the same and method for manufacturing seamless steel pipe using the same | Takaaki Iguchi, Hideto Kimura | 2019-10-15 |
| 10092949 | Method of manufacturing round steel billet | Hirohide Uehara, Yoichi Ito | 2018-10-09 |
| 9707614 | Tube expanding method for manufacturing metal tube | Noritsugu Itakura, Seiichiro Nambu, Kazutoshi Ishikawa | 2017-07-18 |
| 9506132 | Method for manufacturing heavy wall steel pipe | Hiroyuki Fukuda, Koji Sugano, Kazutoshi Ishikawa, Yasuhide Ishiguro | 2016-11-29 |
| 6073331 | Method for manufacturing seamless pipe | Takashi Ariizumi | 2000-06-13 |
| 5816087 | Method for producing a seamless steel tubular product | Yusuke Minami, Masahiko Yasukawa | 1998-10-06 |
| 5778714 | Method for manufacturing seamless pipe | Takashi Ariizumi, Motoharu Yamazaki, Masahiko Yasukawa | 1998-07-14 |