Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8691141 | Low carbon resulfurized free cutting steel | Toshiyuki Murakami, Kunikazu Tomita | 2014-04-08 |
| 8124008 | Free cutting steel | Toshiyuki Murakami, Kiyohito Ishida, Katsunari Oikawa | 2012-02-28 |
| 6558484 | High strength screw | Hiroshi Onoe, Katsuhiko Kikuchi | 2003-05-06 |