Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9764410 | Submerged arc welding method for steel plate | Atsushi Ishigami, Naoya Hayakawa | 2017-09-19 |
| 9677692 | Welded steel pipe joined with high-energy-density beam and method for producing the same | Kenji Oi | 2017-06-13 |