Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9896748 | Low yield ratio dual phase steel linepipe with superior strain aging resistance | Jayoung Koo, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, Adnan Ozekcin, Raghavan Ayer +7 more | 2018-02-20 |
| 5397654 | Abrasion-resistant welded steel pipe | Shigeru Endo, Osamu Hirano, Kazuyoshi Ume | 1995-03-14 |
| 5300751 | Method for gas-shield arc welding of a pipe and weld wire for use in the welding method | Shigeru Endo, Motokiyo Itoh, Toshihiko Nakano, Masato Konishi | 1994-04-05 |
| 5272305 | Girth-welding process for a pipe and a high cellulose type coated electrode | Shigeru Endo, Motokiyo Itoh, Takeshi Sugino, Shouzou Naruse | 1993-12-21 |
| 5116571 | Chromoum heat-resistant steel excellent in toughness and having high cracking resistance and high creep strength in welded joint | Nakatsugu Abe, Haruo Suzuki, Hiroaki Tsukamoto, Seishi Tsuyama | 1992-05-26 |