Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10570478 | Steel for mechanical structure for cold working, and method for producing same | Yuki Sasaki, Takehiro Tsuchida, Koji Yamashita, Masamichi Chiba, Kei MASUMOTO +1 more | 2020-02-25 |
| 10526675 | Method for manufacturing steel for high-strength hollow spring | Hitoshi Hatano, Akira Tange, Kiyoshi Kurimoto, Yurika Goto | 2020-01-07 |
| 9956650 | Weld metal having excellent resistance to hydrogen embrittlement | Hidenori Nako, Wataru Urushihara, Munenobu Sato, Yoshihiko Kitagawa | 2018-05-01 |
| 9718150 | Weld metal excellent in hydrogen embrittlement resistance | Hidenori Nako, Wataru Urushihara, Munenobu Sato, Yoshihiko Kitagawa | 2017-08-01 |
| 9650704 | Seamless steel pipe for hollow spring | Hitoshi Hatano, Eiichi Tamura, Kotaro Toyotake | 2017-05-16 |
| 9592575 | Weld metal having excellent resistance to hydrogen embrittlement susceptibility | Hidenori Nako, Wataru Urushihara, Munenobu Sato, Yoshihiko Kitagawa | 2017-03-14 |
| 9429255 | Hollow seamless pipe for high-strength spring | Hitoshi Hatano, Eiichi Tamura, Kotaro Toyotake, Takashi Yajima, Akira Tange | 2016-08-30 |
| 9267183 | Wire with excellent suitability for drawing and process for producing the same | Shogo Murakami, Shoji Miyazaki, Ken Ishida, Masao Toyama, Fujio Koizumi | 2016-02-23 |
| 9023159 | Steel for heat treatment | Hitoshi Hatano | 2015-05-05 |
| 9005378 | Spring steel wire rod excellent in decarburization resistance and wire drawing workability and method for producing same | Shogo Murakami, Takeshi Kuroda, Hiromichi Tsuchiya | 2015-04-14 |
| 8470105 | Process for manufacturing a high carbon steel wire material having excellent wire drawability | Shogo Murakami, Hiroshi Yaguchi, Takeshi Kuroda, Hidenori Sakai, Tomotada Maruo +1 more | 2013-06-25 |
| 8382916 | Method for production of steel product with outstanding descalability; and steel wire with outstanding descalability | Takeshi Kuroda, Hidenori Sakai, Mikako Takeda, Takashi Onishi, Tomotada Maruo +1 more | 2013-02-26 |
| 8216394 | Method for production of steel product with outstanding descalability; and steel wire with outstanding descalability | Takeshi Kuroda, Hidenori Sakai, Mikako Takeda, Takashi Onishi, Tomotada Maruo +1 more | 2012-07-10 |
| 8038934 | High-strength spring steel excellent in brittle fracture resistance and method for producing same | Hiroshi Yaguchi, Wataru Urushihara | 2011-10-18 |
| 7618498 | Steels for high-strength springs excellent in cold workability and quality stability | Hiroshi Yaguchi, Nao Yoshihara | 2009-11-17 |
| 7037387 | Steel wire excellent in descalability in mechanical descaling and method for production thereof | Mamoru Nagao, Masahiro Nomura, Hiroshi Yaguchi, Takaaki Minamida, Noriaki Hiraga | 2006-05-02 |