Issued Patents 2018
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10151011 | High-strength stainless steel seamless tube or pipe for oil country tubular goods, and method of manufacturing the same | Yasuhide Ishiguro | 2018-12-11 |
| 10151012 | High-strength stainless steel pipe | Yasuhide Ishiguro, Takeshi Suzuki, Hideo Sato, Tetsu Nakahashi | 2018-12-11 |
| 10023930 | Method of manufacturing high strength stainless steel tube or pipe | Yasuhide Ishiguro | 2018-07-17 |
| 9932651 | Thick-walled high-strength seamless steel pipe with excellent sour resistance for pipe for pipeline, and process for producing same | Yasuhide Ishiguro, Mitsuo Kimura, Hiroshi Yokogawa, Tadao Katagiri, Masahito Tanaka | 2018-04-03 |