Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6764254 | Throwaway insert and pin mirror cutter using the same | Shigenori Emoto, Akio Nakamura | 2004-07-20 |
| 6755444 | Slim-type threaded joint for oil well pipes | Katsutoshi Sumitani, Shigeo Nagasaku | 2004-06-29 |
| 6698802 | Pipe joint | Shigeo Nagasaku, Katsutoshi Sumitani | 2004-03-02 |