Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9243315 | High-strength Zn—Al coated steel wire for bridges with excellent corrosion resistance and fatigue properties and method for manufacturing the same | Nobuyuki Shimoda, Junichi Kodama, Makoto Kosaka, Shingo Yamasaki | 2016-01-26 |
| 8951365 | High strength steel and high strength bolt excellent in delayed fracture resistance and methods of production of same | Daisuke Hirakami, Tetsushi Chida | 2015-02-10 |
| 8876988 | Steel for nitriding and nitrided part | Tetsushi Chida, Manabu Kubota, Daisuke Hirakami, Masayuki Hashimura | 2014-11-04 |
| 8707944 | Saw wire | Mitsuru Morita, Hiroaki Sakamoto, Hirokatsu Yashiro, Makoto Kosaka | 2014-04-29 |
| 8557060 | High-strength steel material with excellent hydrogen embrittlement resistance | Shingo Yamasaki, Daisuke Hirakami, Seiki Nishida | 2013-10-15 |
| 8016953 | High-strength steel material with excellent hydrogen embrittlement resistance | Shingo Yamasaki, Daisuke Hirakami, Seiki Nishida | 2011-09-13 |
| 7754029 | Steel with excellent delayed fracture resistance and tensile strength of 1801 MPa class or more, and its shaped article | Manabu Kubota, Suguru Yoshida, Hideki Matsuda, Koki Mizuno, Tadashi Ohya | 2010-07-13 |
| 7510614 | High strength bolt excellent in delayed fracture resistance and method of production of same | Suguru Yoshida, Manabu Kubota, Hideki Matsuda, Tadashi Ohya, Koki Mizuno | 2009-03-31 |
| 5830285 | Fine graphite uniform dispersion steel excellent in cold machinability, cuttability and hardenability, and production method for the same | Sakae Katayama, Masahiro Toda, Ken Naito | 1998-11-03 |
| 5240520 | High strength, ultra fine steel wire having excellent workability in stranding and process and apparatus for producing the same | Syoji Sasaki, Hitoshi Tashiro, Hiroshi Sato | 1993-08-31 |
| 4753691 | Method of directly softening rolled machine structural steels | Toshihiko Takahashi, Hiroshi Sato | 1988-06-28 |
| 4702778 | Method for softening rolled medium carbon machine structural steels | Toshihiko Takahashi, Hiroshi Sato | 1987-10-27 |