Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10144982 | Fe—Mn—C-based TWIP steel having remarkable mechanical performance at very low temperature, and preparation method thereof | Tae Kyung LEE, Chong Soo Lee, Seok Weon Song, Jae Hyung Kim, Motomichi Koyama | 2018-12-04 |
| 6572716 | Fine ferrite-based structure steel production method | Tohru Hayashi, Shiro Torizuka, Kotobu Nagai, Osamu Umezawa | 2003-06-03 |
| 6546808 | Method of evaluating high fatigue strength material in high tensile strength steel and creation of high fatigue strength material | Tatsuaki Sawai, Saburo Matsuoka, Takayuki Abe, Etsuo Takeuchi, Kensuke Miyahara +2 more | 2003-04-15 |
| 6523416 | Method for setting shape and working stress, and working environment of steel member | Shusaku Takagi, Tadanobu Inoue | 2003-02-25 |
| 6464807 | Production method of ultra fine grain steel | Shiro Torizuka, Osamu Umezawa, Kotobu Nagai | 2002-10-15 |
| 6348108 | High toughness steel and a method for manufacturing the same | Satoru Yusa, Toshihiko Takahashi | 2002-02-19 |
| 6332905 | High-strength metal solidified material and acid steel and manufacturing methods thereof | Minoru Ootaguchi, Shuji Wanikawa, Yuji Muramatsu, Kotobu Nagai, Toru Hayashi | 2001-12-25 |
| 6287397 | High strength phosphorus-containing steel and method for producing the same | Toshihiro Hanamura, Hiroshi Nakajima, Shiro Torizuka, Kotobu Nagai | 2001-09-11 |
| 6221178 | Ultra-fine grain steel and method for producing it | Shiro Torizuka, Kotobu Nagai, Osamu Umezawa | 2001-04-24 |
| 6129791 | Oxides dispersion steel and making process thereof | Hiroshi Nakajima, Shiro Torizuka, Kotobu Nagai | 2000-10-10 |