Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9403242 | Steel for welding | Kazuhiro Fukunaga, Yoshiyuki Watanabe, Shinsuke Usui | 2016-08-02 |
| 8920713 | Steel for welded structure and producing method thereof | Yoshiyuki Watanabe, Kazuhiro Fukunaga, Akihiko Kojima, Ryuji Uemori | 2014-12-30 |
| 8668784 | Steel for welded structure and producing method thereof | Yoshiyuki Watanabe, Kazuhiro Fukunaga, Akihiko Kojima, Ryuji Uemori | 2014-03-11 |
| 8361248 | Steel superior in CTOD properties of weld heat-affected zone and method of production of same | Ryuji Uemori, 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, Ryuji Uemori, Yoshiyuki Watanabe, Yoshihide Nagai | 2011-04-05 |
| 7857917 | Method of production of steel for welded structures excellent in low temperature toughness of weld heat affected zone | Kazuhiro Fukunaga, Yasushi Mizutani, Yoshiyuki Watanabe | 2010-12-28 |
| 5723089 | Line pipe metal arc welded with wire alloy | Hiroyuki Ogawa, Koichi Shinada, Yoshinori Ogata, Hiroshi Tamehiro, Hajime Ishikawa +2 more | 1998-03-03 |
| 4790885 | Method of producing high tensile-high toughness steel | Masana Imagumbai, Naoomi Yamada | 1988-12-13 |