Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7641564 | Member with inner teeth and method of producing the same | Yoshimi Usui, Junichi Suto, Minoru Sugiyama, Hidetoshi Isogai, Munenori Tate +2 more | 2010-01-05 |
| 4749308 | Self-propelled underwater cable burying machine | — | 1988-06-07 |
| 4537530 | Marine cable burying method and device therefor | Kazuomi Yamamura, Hideo Ishihara, Yoshinao Iwamoto, Hifumi Sakaguchi, Masao Morita | 1985-08-27 |
| 4492492 | Guiding method for cable burying device and a device therefor | Yoshinao Iwamoto, Yuichi Shirasaki, Kenichi Asakawa | 1985-01-08 |