Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9719615 | High strength steel pipe for line pipe superior in low temperature toughness and high strength steel plate for line pipe and methods of production of the same | Takuya Hara, Yoshio Terada | 2017-08-01 |
| 9188253 | Oil country tubular goods with dual phase structure and producing method thereof | Mitsuru Sawamura, Eiji Tsuru, Jun Agata | 2015-11-17 |
| 9126283 | Electric resistance welded oil country tubular goods and manufacturing method of electric resistance welded oil country tubular goods | Mitsuru Sawamura | 2015-09-08 |
| 9050681 | Method of production of electric resistance welded steel pipe and high Si or high Cr electric resistance welded steel pipe | Hideki Hamatani, Shinji Kodama, Nobuo Mizuhashi, Sunao Takeuchi, Tomohiro Nakaji +3 more | 2015-06-09 |
| 8974610 | High-strength welded steel pipe and method for producing the same | Taishi Fujishiro, Takuya Hara, Yoshio Terada, Shinya Sakamoto | 2015-03-10 |
| 8920583 | Steel pipe excellent in deformation characteristics and method of producing the same | Tetsuo Ishitsuka, Motofumi Koyuba, Toshiyuki Ogata | 2014-12-30 |
| 8815024 | Steel plate or steel pipe with small occurrence of Bauschinger effect and methods of production of same | Eiji Tsuru | 2014-08-26 |
| 8764918 | High strength steel pipe for line pipe superior in low temperature toughness and high strength steel plate for line pipe and methods of production of the same | Takuya Hara, Yoshio Terada | 2014-07-01 |
| 8715430 | High strength steel plate and high strength welded pipe excellent in ductile fracture characteristic and methods of production of same | Takuya Hara, Yasuhiro Shinohara, Yoshio Terada | 2014-05-06 |
| 8685182 | High-strength steel pipe and producing method thereof | Kensuke Nagai, Yasuhiro Shinohara, Shinya Sakamoto, Takuya Hara | 2014-04-01 |
| 8653400 | High strength welded steel tube superior in hydrogen embrittlement cracking resistance of weld metal and method of production of same | Eiji Tsuru, Takuya Hara, Hiroshi Morimoto, Yoshio Terada, Tatsuya Yoshida +1 more | 2014-02-18 |
| 8110292 | High strength steel plate, steel pipe with excellent low temperature toughness, and method of production of same | Taishi Fujishiro, Shinya Sakamoto, Takuya Hara | 2012-02-07 |
| 8084144 | High strength thick welded steel pipe for line pipe superior in low temperature toughness and method of production of the same | Takuya Hara | 2011-12-27 |
| 8070887 | High-strength steel sheet and high-strength steel pipe excellent in deformability and method for producing the same | Yasuhiro Shinohara, Takuya Hara | 2011-12-06 |
| 8049131 | Ultrahigh strength welded joint and ultrahigh strength welded steel pipe excellent in cold cracking resistance of weld metal, and methods for producing the same | Takuya Hara | 2011-11-01 |
| 8039118 | Welded steel pipe for high strength line pipe superior in low temperature toughness and method of production of the same | Takuya Hara | 2011-10-18 |
| 7967926 | UOE steel pipe excellent in collapse strength and method of production thereof | Eiji Tsuru | 2011-06-28 |
| 7920442 | Objective lens, optical pick-up device, and optical disk device | Shogo Horinouchi, Takashi Haruguchi, Taiichi Mori, Hideki Yoshinaka, Nobuyuki Tokubuchi +1 more | 2011-04-05 |
| 7920443 | Objective lens, optical pick-up device, and optical disk device | Shogo Horinouchi, Takashi Haruguchi, Taiichi Mori, Hideki Yoshinaka, Nobuyuki Tokubuchi +1 more | 2011-04-05 |
| 7892368 | UOE steel pipe excellent in collapse strength and method of production thereof | Eiji Tsuru | 2011-02-22 |
| 7813235 | Objective lens, optical pick-up device, and optical disk device | Shogo Horinouchi, Takashi Haruguchi, Taiichi Mori, Hideki Yoshinaka, Nobuyuki Tokubuchi +1 more | 2010-10-12 |
| 7736447 | Steel plates for ultra-high-strength linepipes and ultra-high-strength linepipes having excellent low-temperature toughness and manufacturing methods thereof | Takuya Hara | 2010-06-15 |
| 7601231 | High-strength steel pipe excellent in low temperature toughness and toughness at weld heat-affected zone | Takuya Hara | 2009-10-13 |
| 7459033 | Oil country tubular goods excellent in collapse characteristics after expansion and method of production thereof | Eiji Tsuru | 2008-12-02 |
| 7301864 | Objective lens, optical pick-up device, and optical disk device | Shogo Horinouchi, Takashi Haruguchi, Taiichi Mori, Hideki Yoshinaka, Nobuyuki Tokubuchi +1 more | 2007-11-27 |