Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6027145 | Joint for steel pipe having high galling resistance and surface treatment method thereof | Masaharu Oka, Haruyuki Nagayoshi, Akira Nakashima, Seijun Higuchi, Ryusuke Inoue +2 more | 2000-02-22 |
| 5919577 | Fe-based alloy foil for liquid-phase diffusion bonding of Fe-based materials by enabling bonding in oxidizing atmospheres | Yasushi Hasegawa, Yuichi Sato, Shigekatsu Ozaki | 1999-07-06 |
| 5403643 | Metallic core of rubber track | — | 1995-04-04 |
| 4830411 | Threaded joint for oil-well pipe | Shunji Nishi, Masao Ogasawara | 1989-05-16 |