Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6338763 | Steel wire for high-strength springs and method of producing the same | Masayuki Hashimura, Hiroshi Hagiwara, Takanari Miyaki, Hiroaki Hayashi, Shoichi Suzuki | 2002-01-15 |
| 5897717 | High strength spring steel and process for producing same | Masayuki Hashimura, Masato Yanase, Taisuke Nishimura, Takashi Otowa, Hiroshi Yarita +2 more | 1999-04-27 |
| 5725689 | Steel wire of high strength excellent in fatigue characteristics | Seiki Nishida, Junji Nakashima, Osami Serikawa | 1998-03-10 |
| 5665182 | High-carbon steel wire rod and wire excellent in drawability and methods of producing the same | Akifumi Kawana, Hiroshi Oba, Seiki Nishida | 1997-09-09 |
| 5662747 | Bainite wire rod and wire for drawing and methods of producing the same | Akifumi Kawana, Hiroshi Oba, Seiki Nishida | 1997-09-02 |
| 5658402 | High-carbon steel wire rod and wire excellent in drawability and methods of producing the same | Akifumi Kawana, Hiroshi Oba, Seiki Nishida | 1997-08-19 |
| 5658399 | Bainite wire rod and wire for drawing and methods of producing the same | Akifumi Kawana, Hiroshi Oba, Seiki Nishida | 1997-08-19 |
| 5650027 | High-carbon steel wire rod and wire excellent in drawability and methods of producing the same | Akifumi Kawana, Hiroshi Oba, Seiki Nishida | 1997-07-22 |
| 5647918 | Bainite wire rod and wire for drawing and methods of producing the same | Akifumi Kawana, Hiroshi Oba, Seiki Nishida | 1997-07-15 |
| 5446427 | Balanced low-pass filter | Kazuhiro Nakayama, Michiya Nakazawa | 1995-08-29 |
| 5248353 | Method of producing steel wires each having very small diameter, high strength and excellent ductility | Seiki Nishida, Hiroshi Oba, Osami Serkiawa | 1993-09-28 |
| 5117874 | Flexible fluid transport pipe having hydrogen-induced cracking resistant high-strength steel | Hideaki Omori, Manjiro Sato, Masatsugu Murao, Kazuhiko Murao, Hideo Chiba +2 more | 1992-06-02 |