Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8696836 | Nonmagnetic high-hardness alloy | Michiharu Ogawa, Shigeki Ueta, Tetsuya Shimizu | 2014-04-15 |
| 8430977 | Hollow drilling steel rod and method of manufacturing the same | Masaya Hisada, Yoneo Hiwasa, Satoshi Nagase | 2013-04-30 |