Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4556164 | Method of field welding head-hardened rails | Hirotsugu Oishibashi, Katsuyoshi Ueyama, Muneyuki Ohara, Mitsuo Nakamura, Shigeru Sasaki | 1985-12-03 |
| 4520756 | Build-up spraying apparatus | Mitsuji Hayashi, Hideo Endo, Hirotsugu Oishibashi, Shigeru Sasaki | 1985-06-04 |