Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8007716 | Steel wire for high strength spring excellent in workability and high strength | Sumie Suda, Noritoshi Takamura, Naoki Terakado, Satoru Tendo, Tadayoshi Fujiwara +1 more | 2011-08-30 |
| 7763123 | Spring produced by a process comprising coiling a hard drawn steel wire excellent in fatigue strength and resistance to setting | Sumie Suda, Nao Yoshihara, Shigetsugu Yoshida, Koji Harada | 2010-07-27 |
| 7615186 | Spring steel excellent in sag resistance and fatigue property | Sumie Suda | 2009-11-10 |
| 7597768 | Steel wire for hard drawn spring excellent in fatigue strength and resistance to settling, and hard drawn spring and method of making thereof | Sumie Suda, Nao Yoshihara, Shigetsugu Yoshida, Koji Harada | 2009-10-06 |
| 7074282 | Steel wire rod for hard drawn spring, drawn wire rod for hard drawn spring and hard drawn spring, and method for producing hard drawn spring | Atushi Inada, Sumie Suda, Noritoshi Takamura, Satoru Tendoh, Tadayoshi Fujiwara +1 more | 2006-07-11 |
| 6800147 | High-strength steel wire excelling in resistance to strain aging embrittlement and longitudinal cracking, and method for production thereof | Mamoru Nagao, Hiroshi Yaguchi, Kenji Ochiai, Takaaki Minamida, Noriaki Hiraga | 2004-10-05 |
| 6645319 | Wire rod for drawing superior in twisting characteristics and method for production thereof | Mamoru Nagao, Kenji Ochiai, Takaaki Minamida, Hiroshi Yaguchi | 2003-11-11 |
| 6605166 | Method for manufacturing high strength bolt excellent in resistance to delayed fracture and to relaxation | Seiichi Koike, Mitsuo Takashima, Katsuhiro Tsukiyama, Yuichi Namimura | 2003-08-12 |
| 6372056 | Spring steel superior in workability | Takeshi Kuroda, Nao Yoshihara | 2002-04-16 |
| 6322641 | High-carbon steel wire superior in resistance to longitudinal cracking, steel product for the same, and process for production of the same | Koichi Makii, Kenji Ochiai, Atsushi INADA, Sakae Wada, Takaaki Minamida +1 more | 2001-11-27 |
| 6206984 | Non-heat treated wire or bar steel for springs | Atsushi INADA, Nao Yoshihara | 2001-03-27 |
| 5873958 | High strength and high toughness steel wires and method for making the same | Koichi Makii, Hiroshi Yaguchi, Takaaki Minamida, Masato Kaiso | 1999-02-23 |
| 5776267 | Spring steel with excellent resistance to hydrogen embrittlement and fatigue | Shigenobu Nanba, Hiroshi Yaguchi, Masataka Shimotsusa, Takenori Nakayama, Takashi Iwata +3 more | 1998-07-07 |
| 5762724 | High strength steel strand for prestressed concrete and method for manufacturing the same | Yukio Yamaoka, Masao Yamada, Masaru Kodama, Toshiki Suwa, Masato Kaiso | 1998-06-09 |
| 5575866 | Hot rolled steel wire rod, fine steel wire and twisted steel wire | Takaaki Minamida, Kozo Katsube, Katsuji Mizutani, Mamoru Murahashi, Kenji Ochiai +3 more | 1996-11-19 |
| 5211772 | Wire rod for high strength and high toughness fine steel wire, high strength and high toughness fine steel wire, twisted products using the fine steel wires, and manufacture of the fine steel wire | Shinzo Ashida, Katsuji Mizutani, Kenji Ochiai | 1993-05-18 |