Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12338516 | Damper spring | Yutaka Neishi, Michimasa Aono, Shoichi Suzuki, Tatsuro Ochi | 2025-06-24 |
| 12338518 | Valve spring | Yutaka Neishi, Michimasa Aono, Satoru Mineta, Shoichi Suzuki, Tatsuro Ochi | 2025-06-24 |
| 12181012 | Damper spring | Yutaka Neishi, Michimasa Aono, Shuji Kozawa, Yoichi Oi, Naoki Takabayashi +6 more | 2024-12-31 |
| 12006994 | Valve spring | Yutaka Neishi, Michimasa Aono, Shuji Kozawa, Fumio Takahashi, Shigekazu Nishimoto +3 more | 2024-06-11 |
| 11952650 | Steel wire | Yutaka Neishi, Michimasa Aono, Shuji Kozawa, Satoru Mineta, Tatsuro Ochi +1 more | 2024-04-09 |
| 10844920 | Spring steel wire and spring | Hiroshi Yarita, Shouichi Suzuki | 2020-11-24 |
| 10344363 | Hot-rolled steel and steel component | Suguru Yoshida, Akira Shiga, Manabu Kubota, Hajime Hasegawa, Hideo MIZUKAMI | 2019-07-09 |
| 10266908 | Rolled steel bar for machine structural use and method of producing the same | Hiromasa Takada, Osamu Ohyama | 2019-04-23 |
| 10260123 | Rolled steel bar for machine structural use and method of producing the same | Hiromasa Takada, Osamu Ohyama | 2019-04-16 |
| 10036086 | Non-heat treated steel | Manabu Kubota | 2018-07-31 |
| 9523404 | Spring steel and spring | Manabu Kubota | 2016-12-20 |
| 9487848 | Hot forging use non-heat-treated steel and hot forged non-heat-treated steel part | Kei Miyanishi, Masayuki Hashimura | 2016-11-08 |
| 9376738 | Hot forging use non-heat-treated steel and hot forged non-heat-treated steel part | Kei Miyanishi, Masayuki Hashimura | 2016-06-28 |
| 9255314 | Hot-forging micro-alloyed steel and hot-rolled steel excellent in fracture-splitability and machinability, and component made of hot-forged microalloyed steel | Manabu Kubota | 2016-02-09 |
| 9187797 | Steel part for machine structural use and manufacturing method thereof | Hiromasa Takada, Manabu Kubota, Yoichi Taniguchi, Junichi Nakatsuka, Kazuhiro Fujimura +1 more | 2015-11-17 |
| 8926767 | Steel part for machine structural use and manufacturing method thereof | Hiromasa Takada, Manabu Kubota | 2015-01-06 |
| 8916008 | Steel part for machine structural use and manufacturing method thereof | Hiromasa Takada, Manabu Kubota | 2014-12-23 |
| 8715428 | Hot-forging micro-alloyed steel and hot-rolled steel excellent in fracture-splitability and machinability, and component made of hot-forged microalloyed steel | Manabu Kubota | 2014-05-06 |
| 8186696 | Steering tie rod end made of steel and method of manufacturing the same | Takeshi Komoto, Hitoshi Sakuma, Takashi Hirano, Hiroyuki Mizuno, Masahiro Toda +2 more | 2012-05-29 |
| 7824508 | Fine grain surface layer steel part and method of production of same | Hiromasa Takada | 2010-11-02 |