Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10500817 | Electron-beam welded joint, steel for electron-beam welding, and method of manufacturing the same | Ryuichi Honma, Tadashi Ishikawa, Akihiko Kojima, Manabu Hoshino | 2019-12-10 |
| 8920713 | Steel for welded structure and producing method thereof | Yoshiyuki Watanabe, Kazuhiro Fukunaga, Akihiko Kojima, Rikio Chijiiwa | 2014-12-30 |
| 8882942 | Ni-added steel plate and method of manufacturing the same | Hitoshi Furuya, Naoki Saitoh, Motohiro Okushima, Yasunori Takahashi, Takehiro Inoue | 2014-11-11 |
| 8668784 | Steel for welded structure and producing method thereof | Yoshiyuki Watanabe, Kazuhiro Fukunaga, Akihiko Kojima, Rikio Chijiiwa | 2014-03-11 |
| 8641836 | Steel plate for line pipe excellent in strength and ductility and method of production of same | Hajime Ishikawa, Yoshiyuki Watanabe, Nobuhiko Mamada | 2014-02-04 |
| 8623154 | Electron-beam welded joint, steel for electron-beam welding, and manufacturing method | Ryuichi Honma, Tadashi Ishikawa, Akihiko Kojima, Manabu Hoshino | 2014-01-07 |
| 8490600 | Common rail, common rail holder, and method of producing common rail | Ryuichi Honma, Yasushi Hasegawa, Yutaka Takagi | 2013-07-23 |
| 8361248 | Steel superior in CTOD properties of weld heat-affected zone and method of production of same | Rikio Chijiiwa, Yoshiyuki Watanabe, Kazuhiro Fukunaga, Akihiko Kojima, Yoshihide Nagai | 2013-01-29 |
| 7918948 | Method of production of 780 MPa class high strength steel plate excellent in low temperature toughness | Kazuhiro Fukunaga, Yoshiyuki Watanabe, Yoshihide Nagai, Rikio Chijiiwa | 2011-04-05 |
| 6555063 | Evaluation apparatus for cleanliness of metal and method thereof | Kazushige Umezawa, Tokio Suzuki, Koichi Chiba, Takehiko Toh, Hiroyuki Kondo +4 more | 2003-04-29 |
| 6432718 | Evaluation apparatus for cleanliness of metal and method thereof | Kazushige Umezawa, Tokio Suzuki, Koichi Chiba, Takehiko Toh, Hiroyuki Kondo +4 more | 2002-08-13 |
| 5985674 | Evaluation method for cleanliness of metal | Kazushige Umezawa, Tokio Suzuki, Koichi Chiba, Takehiko Toh, Hiroyuki Kondo +4 more | 1999-11-16 |
| 5985053 | Steel having improved toughness in welding heat-affected zone | Takuya Hara, Hitoshi Asahi, Hiroshi Tamehiro, Naoki Saito | 1999-11-16 |
| 5348595 | Process for the preaparation of a Ti-Al intermetallic compound | Toshihiro Hanamura, Mitsuru Tanino, Jin-ichi Takamura | 1994-09-20 |
| 5348594 | Ti-Al intermetallic compound with Se | Toshihiro Hanamura, Mitsuru Tanino, Jin-ichi Takamura | 1994-09-20 |