Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12221660 | Method for producing rail | Mineyasu Takemasa | 2025-02-11 |
| 12186822 | Method for manufacturing rail, and rail | Naoki IIZUKA, Ryo Matsuoka, Shigeo Okamoto | 2025-01-07 |
| 11566307 | Rail | Mineyasu Takemasa | 2023-01-31 |
| 11452963 | Dust collector | Hiroshi Tanaka, Shigeo Fujita, Hidetoshi Hashizume | 2022-09-27 |
| 11401591 | Method for selecting rail steel and wheel steel | Tatsumi Kimura, Katsuyuki Ichimiya, Kazukuni Hase | 2022-08-02 |
| 11111555 | Method for producing rail | Tatsumi Kimura, Katsuyuki Ichimiya, Kazukuni Hase | 2021-09-07 |
| 10041160 | Steel for spring, and method for producing spring | Kiyoshi Uwai, Shigeru Endo, Katsutoshi Yamashita, Koei Tsuru, Keiichi Fujie +1 more | 2018-08-07 |
| 9732395 | Ingot for bearing and production process | Kiyoshi Uwai, Shinji Mitao | 2017-08-15 |
| 9618070 | Spring steel and method for manufacturing the same | Kazukuni Hase, Hideto Kimura | 2017-04-11 |
| 9139887 | Bearing steel and ingot material for bearing having excellent rolling contact fatigue life characteristics and method for manufacturing the same | Kazukuni Hase, Tatsumi Kimura, Shinji Mitao | 2015-09-22 |
| 8608874 | Spring steel and method for manufacturing the same | Kazukuni Hase, Hideto Kimura | 2013-12-17 |
| 8404178 | High-strength pearlitic steel rail having excellent delayed fracture properties | Tatsumi Kimura, Shinichi Suzuki, Nobuo Shikanai | 2013-03-26 |
| 8361382 | High-strength pearlitic steel rail having excellent delayed fracture properties | Tatsumi Kimura, Shinichi Suzuki, Nobuo Shikanai | 2013-01-29 |
| 7955445 | Internal high hardness type pearlitic rail with excellent wear resistance and rolling contact fatigue resistance and method for producing same | Tatsumi Kimura, Shinichi Suzuki, Kimihiro Nishimura, Shinji Mitao, Nobuo Shikanai | 2011-06-07 |
| 7793769 | Automatic vending machine | Takashi Kumabe | 2010-09-14 |
| 7661520 | Method of determining completion of coin insertion and coin recovering device for automatic vending machine | Takashi Kumabe | 2010-02-16 |