Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7325717 | Welding material and a method of producing welded joint | Yasushi Morikage, Takahiro Kubo, Koich Yasuda, Kazuo Hiraoka, Akihiko Ohta +1 more | 2008-02-05 |
| 6706125 | Linear shape steel excellent in joint fatigue characteristics and production method therefor | Tatsumi Kimura, Yasushi Morikage, Takanori Okui, Keizou Taoka, Hironori Miura +2 more | 2004-03-16 |
| 6699338 | Method of manufacturing corrosion resistant steel materials | Tatsumi Kimura, Kazuhiko Shiotani, Fumimaru Kawabata | 2004-03-02 |
| 6521057 | High-strength high-toughness steel products | Noritsugu Itakura, Mitsuhiro Okatsu, Fumimaru Kawabata | 2003-02-18 |
| 6454881 | Non-refined steel being reduced in anisotropy of material and excellent in strength, toughness and machinability | Kazukuni Hase, Yasuhiro Omori, Toshiyuki Hoshino | 2002-09-24 |
| 6451134 | 590MPa class heavy gauge H-shaped steel having excellent toughness and method of producing the same | Tatsumi Kimura, Fumimaru Kawabata | 2002-09-17 |
| 6440235 | Method of manufacturing high productive and high strength rolled H-shaped | Tatsumi Kimura, Fumimaru Kawabata | 2002-08-27 |
| 6436340 | Weatherable steel material | Kazuhiko Shiotani, Akio Ohmori, Kimihiro Nishimura, Yasuyoshi Yamane, Fumimaru Kawabata | 2002-08-20 |
| 6358335 | Continuous casting slab suitable for the production of non-tempered high tensile steel material | Akio Ohmori, Fumimaru Kawabata | 2002-03-19 |
| 6344093 | High tensile strength steel product for high heat input welding, having excellent toughness in heat-affected zone | Akio Ohmori, Fumimaru Kawabata | 2002-02-05 |
| 6306227 | Rolling bearing | Akio Okayama, Hiroshi Murakami, Kikuo Maeda, Takuya Atsumi, Toshiyuki Hoshino | 2001-10-23 |
| 6299710 | Method of producing a bainite steel product | Noritsugu Itakura, Mitsuhiro Okatsu, Fumimaru Kawabata | 2001-10-09 |
| 6162389 | High-strength and high-toughness non heat-treated steel having excellent machinability | Kazukuni Hase, Takashi Iwamoto, Yasuhiro Omori, Toshiyuki Hoshino, Tohru Hayashi +1 more | 2000-12-19 |
| 6068712 | Steel products having superior weathering, method of producing the steel products, and method of forming weathering protective rust on steel product surfaces | Yasuyashi Yamane, Kazuhiko Shiotani, Fumimaru Kawabata, Toshiyuki Hoshino, Kimihiro Nishimura | 2000-05-30 |
| 6007644 | Heavy-wall H-shaped steel having high toughness and yield strength and process for making steel | Akio Ohmori, Tatsumi Kimura, Fumimaru Kawabata | 1999-12-28 |
| 5989366 | Method of manufacturing thick steel product of high strength and high toughness having excellent weldability and minimal variation of structure and physical properties | Tohru Hayashi, Mitsuhiro Okatsu, Fumimaru Kawabata | 1999-11-23 |
| 5960250 | Bearing material | Satosi Yasumoto, Tosiyuki Hosino, Atsuhiko Ohta, Michiro Hamanoue | 1999-09-28 |
| 5900076 | Bainitic steel materials having a less scattering of properties and method of producing the same | Tohru Hayashi, Mitsuhiro Okatsu, Kenji Oi, Fumimaru Kawabata, Tomoya Koseki +2 more | 1999-05-04 |
| 5882447 | Heavy-wall structural steel and method | Tatsumi Kimura, Kiyoshi Uchida, Fumimaru Kawabata, Takanori Okui | 1999-03-16 |
| 5766381 | Method of producing bainitic steel materials having a less scattering of properties | Tohru Hayashi, Mitsuhiro Okatsu, Kenji Oi, Fumimaru Kawabata, Tomoya Koseki +2 more | 1998-06-16 |
| 5743972 | Heavy-wall structural steel and method | Tatsumi Kimura, Kiyoshi Uchida, Fumimaru Kawabata, Takanori Okui | 1998-04-28 |
| 5648044 | Graphite steel for machine structural use exhibiting excellent free cutting characteristic, cold forging characteristic and post-hardening/tempering fatigue resistance | Toshiyuki Hoshino, Takashi Iwamoto, Akihiro Matsuzaki | 1997-07-15 |
| 5476556 | Method of manufacturing steel for machine structural use exhibiting excellent free cutting characteristic, cold forging characteristic and post-hardening/tempering fatigue resistance | Toshiyuki Hoshino, Takashi Iwamoto, Akihiro Matsuzaki | 1995-12-19 |
| 5173254 | Steel having excellent vibration-dampening properties and weldability | Tomoya Koseki, Shozaburo Nakano, Syuzo Ueda | 1992-12-22 |